made the install script executable

merge to include updated data

.gitignore

@@ -0,0 +1 @@
+site/

.pylintrc

@@ -0,0 +1,2 @@
+[MASTER]
+disable = c0103

LICENSE.txt

@@ -0,0 +1,14 @@
+Copyright (c) 2018, 2019, Kristjan Komloši, Jakob Kosec, Juš Dolžan,
+TeraHz development team
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

README.md

@@ -1,9 +1,23 @@
 # TeraHz
-TeraHz is a low-cost spectrometer.
+
+[![Documentation Status](https://readthedocs.org/projects/terahz/badge/?version=latest)](https://terahz.readthedocs.io/en/latest/?badge=latest)
+
+TeraHz is a low-cost spectrometer based on a Raspberry Pi 3 or 3 B+ and three sensors:
+ + [__AS7265x__](https://www.tindie.com/products/onehorse/compact-as7265x-spectrometer/)
+ is a 18 channel spectrometer chipset that provides the device with spectral data
+ + [__VEML6075__](https://www.sparkfun.com/products/15089) is an
+ UVA/UVB sensor
+ + [__APDS-9301__](https://www.sparkfun.com/products/14350) is a calibrated illuminance (lux) meter that provides the device with reliable readings
+
+## Why?
+Because people and institutions could use an affordable and accurate light-analysing device that is also portable, easy to use and simple to assemble. TeraHz was started as an answer to our high school not being able to afford a commercially available solution. One TeraHz spectrometer costs around 150$ in parts, which makes it a competitive alternative to other solutions on the market today.
 
 ## Development team
 Copyright 2018, 2019
 
-- Kristjan "d3m1g0d" Komloši (electronics engineer, middleware)
-- Juš "ANormalPerson" Dolžan (backend developer)
-- Jakob "D3m1j4ck" Kosec (frontend developer)
+- Kristjan "cls-02" Komloši (electronics, sensor drivers, backend)
+- Jakob "D3m1j4ck" Kosec (frontend)
+
+
+I would also like to thank Juš "ANormalPerson" Dolžan, who decided to leave the
+team, but helped me a lot with backend development.

backend/app.py

@@ -0,0 +1,17 @@
+# app.py - main backend program
+'''Main TeraHz backend program'''
+# All code in this file is licensed under the ISC license, provided in LICENSE.txt
+from flask import Flask
+import flask
+import sensors
+
+app = Flask(__name__)
+@app.route('/data')
+def sendData():
+    '''Responder function for /data route'''
+    s = sensors.Spectrometer(path='/dev/serial0', baudrate=115200, tout=1)
+    u = sensors.UVSensor()
+    l = sensors.LxMeter()
+    response = flask.jsonify([s.getData(), l.getData(), u.getABI()])
+    response.headers.add('Access-Control-Allow-Origin', '*')
+    return response

backend/run.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+# run.sh - run the backend server
+sudo gunicorn app:app -b 0.0.0.0:5000 &
+disown

backend/sensors.py

@@ -1,39 +1,40 @@
 # sensors.py - a module for interfacing to the sensors
+'''Module for interfacing with TeraHz sensors'''
 # Copyright 2019 Kristjan Komloši
-# The code in this file is licensed under the 3-clause BSD License
-
+# All code in this file is licensed under the ISC license, provided in LICENSE.txt
 import serial as ser
 import pandas as pd
-from threading import Timer
-from sys import exit as ex
-import time
+import smbus2
 
 class Spectrometer:
+    '''Class representing the AS7265X specrometer'''
     def initializeSensor(self):
-        '''confirm the sensor is responding and proceed with spectrometer initialization'''
+        '''confirm the sensor is responding and proceed\
+         with spectrometer initialization'''
         try:
-            rstring='undefined' # just need it set to a value
+            rstring = 'undefined'  # just need it set to a value
+            self.setParameters({'gain': 0})
             self.serialObject.write(b'AT\n')
-            rstring=self.serialObject.readline().decode()
+            rstring = self.serialObject.readline().decode()
             if rstring == 'undefined':
-                raise Exception #sensor didn't respond
+                raise Exception  # sensor didn't respond
             if rstring == 'OK':
-                pass #handshake passed
+                pass  # handshake passed
             if rstring == 'ERROR':
-                raise Exception #sensor is in error state
+                raise Exception  # sensor is in error state
         except:
-            print('An exception ocurred when performing spectrometer handshake')
-            ex(1)
-        self.setParameters()
+            raise Exception(
+                'An exception ocurred when performing spectrometer handshake')
 
-    def setParameters(self, parameters={}):
+    def setParameters(self, parameters):
         '''applies the parameters like LED light and gain to the spectrometer'''
         try:
             if 'it_time' in parameters:
                 it_time = int(parameters['it_time'])
-                if it_time <=0 :
+                if it_time <= 0:
                     it_time = 1
-                self.serialObject.write('ATINTTIME={}\n'.format(string(it_time)).encode())
+                self.serialObject.write(
+                    'ATINTTIME={}\n'.format(str(it_time)).encode())
                 self.serialObject.readline()
 
             if 'gain' in parameters:
@@ -46,44 +47,211 @@ class Spectrometer:
             if 'led' in parameters:
                 led = bool(parameters['led'])
                 if led:
-                    led=1
+                    led = 1
                 else:
-                    led=0
+                    led = 0
                 self.serialObject.write('ATLED3={}\n'.format(led).encode())
                 self.serialObject.readline()
         except:
-           print('An exception occured during spectrometer initialization')
-           ex(1)
+            raise Exception(
+                'An exception occured during spectrometer initialization')
 
-    def startDataCollection(self):
+    def getData(self):
+        '''Returns spectral data in a pandas DataFrame.'''
         try:
             self.serialObject.write(b'ATCDATA\n')
             rawresp = self.serialObject.readline().decode()
         except:
-            print('An exception occurred when polling for spectrometer data')
-            ex(1)
+            raise Exception(
+                'An exception occurred when polling for spectrometer data')
         else:
             responseorder = [i for i in 'RSTUVWGHIJKLABCDEF']
             realorder = [i for i in 'ABCDEFGHRISJTUVWKL']
-            response = pd.Series([float(i)/35.0 for i in rawresp[:-3].split(',')], index=responseorder)
-            self.data = pd.DataFrame(response, index=realorder, columns = ['uW/cm^2'])
-        self.schedule(self.rrate)
+            response = pd.Series(
+                [float(i) / 35.0 for i in rawresp[:-3].split(',')], index=responseorder)
+            return pd.DataFrame(response, index=realorder, columns=['uW/cm^2']).to_dict()['uW/cm^2']
 
-    def schedule(self, refresh):
-        self.timerObject = Timer(refresh, self.startDataCollection)
-        self.timerObject.start()
-
-
-    def __init__(self, path='/dev/ttyUSB0', baudrate=115200, tout=1, rrate=1, params={}):
-        self.path=path
-        self.baudrate=baudrate
-        self.timeout=1
-        self.rrate=rrate
+    def __init__(self, path='/dev/ttyUSB0', baudrate=115200, tout=1):
+        self.path = path
+        self.baudrate = baudrate
+        self.timeout = 1
         try:
             self.serialObject = ser.Serial(path, baudrate, timeout=tout)
         except:
-            print('An exception occured when opening the serial port at {}'.format(path))
-            ex(1)
+            raise Exception(
+                'An exception occured when opening the serial port at {}'.format(path))
         else:
             self.initializeSensor()
-            self.startDataCollection()
+
+
+class LxMeter:
+    '''Class representing the APDS-9301 digital photometer.'''
+    def __init__(self, busNumber=1, addr=0x39):
+        self.addr = addr
+        try:
+            # initialize the SMBus interface
+            self.bus = smbus2.SMBus(busNumber)
+        except:
+            raise Exception(
+                'An exception occured opening the SMBus {}'.format(self.bus))
+
+        try:
+            self.bus.write_byte_data(
+                self.addr, 0xa0, 0x03)  # enable the sensor
+            self.setGain(16)
+        except:
+            raise Exception('An exception occured when enabling lux meter')
+
+    def setGain(self, gain):
+        '''Set the sensor gain. Either 1 or 16.'''
+        if gain == 1:
+            try:
+                temp = self.bus.read_byte_data(self.addr, 0xa1)
+                self.bus.write_byte_data(self.addr, 0xa1, 0xef & temp)
+            except:
+                raise Exception(
+                    'An exception occured when setting lux meter gain')
+        if gain == 16:
+            try:
+                temp = self.bus.read_byte_data(self.addr, 0xa1)
+                self.bus.write_byte_data(self.addr, 0xa1, 0x10 | temp)
+            except:
+                raise Exception(
+                    'An exception occured when setting lux meter gain')
+        else:
+            raise Exception('Invalid gain')
+
+    def getGain(self):
+        '''Get the gain from the sensor.'''
+        try:
+            if self.bus.read_byte_data(self.addr, 0xa1) & 0x10 == 0x10:
+                return 16
+            if self.bus.read_byte_data(self.addr, 0xa1) & 0x10 == 0x00:
+                return 1
+            raise Exception('An error occured when getting lux meter gain')
+            # Under normal conditions, this raise is unreachable.
+        except:
+            raise Exception('An error occured when getting lux meter gain')
+
+    def setIntTime(self, time):
+        '''Set the lux sensor integration time. 0 to including 2'''
+        if time < 0 or time > 2:
+            raise Exception('Invalid integration time')
+        try:
+            temp = self.bus.read_byte_data(self.addr, 0xa1)
+            self.bus.write_byte_data(self.addr, 0xa1, (temp & 0xfc) | time)
+        except:
+            raise Exception(
+                'An exception occured setting lux integration time')
+
+    def getIntTime(self):
+        '''Get the lux sensor integration time.'''
+        try:
+            return self.bus.read_byte_data(self.addr, 0xa1) & 0x03
+        except:
+            raise Exception(
+                'An exception occured getting lux integration time')
+
+    def getData(self):
+        '''return the calculated lux value'''
+        try:
+            chA = self.bus.read_word_data(self.addr, 0xac)
+            chB = self.bus.read_word_data(self.addr, 0xae)
+        except:
+            raise Exception('An exception occured fetching lux channels')
+
+        # scary computations ahead! refer to the apds-9301 datasheet!
+        if chB / chA <= 0.5 and chB / chA > 0:
+            lux = 0.0304 * chA - 0.062 * chA * (chB / chA)**1.4
+        elif chB / chA <= 0.61 and chB / chA > 0.5:
+            lux = 0.0224 * chA - 0.031 * chB
+        elif chB / chA <= 0.8 and chB / chA > 0.61:
+            lux = 0.0128 * chA - 0.0153 * chB
+        elif chB / chA <= 1.3 and chB / chA > 0.8:
+            lux = 0.00146 * chA - 0.00112 * chB
+        else:
+            lux = 0
+        return lux
+
+
+class UVSensor:
+    '''Class representing VEML6075 UVA/B meter'''
+    def __init__(self, bus=1, addr=0x10):
+        self.addr = addr
+        try:
+            self.bus = smbus2.SMBus(bus)
+        except:
+            raise Exception(
+                'An exception occured opening SMBus {}'.format(bus))
+
+        try:
+            # enable the sensor and set the integration time
+            self.bus.write_byte_data(self.addr, 0x00, 0b00010000)
+        except:
+            raise Exception(
+                'An exception occured when initalizing the UV Sensor')
+
+    def getABI(self):
+        '''Calculates the UVA and UVB irradiances,
+        along with UV index. Returns [a,b,i]'''
+
+        try:
+            # read the raw UVA, UVB and compensation values from the sensor
+            aRaw = self.bus.read_word_data(self.addr, 0x07)
+            bRaw = self.bus.read_word_data(self.addr, 0x09)
+            c1 = self.bus.read_word_data(self.addr, 0x0a)
+            c2 = self.bus.read_word_data(self.addr, 0x0b)
+        except:
+            raise Exception('An exception occured when fetching raw UV data')
+        # scary computations ahead! refer to Vishay app note 84339 and Sparkfun
+        # VEML6075 documentation.
+
+        # compensate for visible and IR noise
+        aCorr = aRaw - 2.22 * c1 - 1.33 * c2
+        bCorr = bRaw - 2.95 * c1 - 1.74 * c2
+
+        # convert values into irradiances
+        a = aCorr * 1.06
+        b = bCorr * 0.48
+
+        # zero out negative results (readings with no uv)
+        if a < 0:
+            a = 0
+        if b < 0:
+            b = 0
+        # last, calculate the UV index
+        i = (a + b) / 2
+
+        return [a, b, i]
+
+    def getA(self):
+        '''Returns UVA value. A getABI() wrapper.'''
+        return self.getABI()[0]
+
+    def getB(self):
+        '''Returns UVB value. A getABI() wrapper.'''
+        return self.getABI()[1]
+
+    def getI(self):
+        '''Returns UV index. A getABI() wrapper.'''
+        return self.getABI()[2]
+
+    def on(self):
+        '''Turns the UV sensor on after shutdown.'''
+        try:
+            # write the default value for power on
+            # no configurable params = no bitmask
+            self.bus.write_byte_data(self.addr, 0x00, 0x10)
+        except:
+            raise Exception(
+                'An exception occured when turning the UV sensor on')
+
+    def off(self):
+        '''Shuts the UV sensor down.'''
+        try:
+            # write the default value + the shutdown bit
+            # no configurable params = no bitmask
+            self.bus.write_byte_data(self.addr, 0x00, 0x11)
+        except:
+            raise Exception(
+                'An exception occured when shutting the UV sensor down')

backend/storage.py

@@ -0,0 +1,37 @@
+# storage.py - storage backend for TeraHz
+'''TeraHz storage backend'''
+# Copyright Kristjan Komloši 2019
+# All code in this file is licensed under the ISC license,
+# provided in LICENSE.txt
+
+
+import sqlite3
+class jsonStorage:
+    '''Class for simple sqlite3 database of JSON entries'''
+    def __init__(self, dbFile):
+        '''Storage object constructor. Argument is filename'''
+        self.db = sqlite3.connect(dbFile)
+
+    def listJSONs(self):
+        '''Returns a list of all existing entries.'''
+        c = self.db.cursor()
+        c.execute('SELECT * FROM storage')
+        result = c.fetchall()
+        c.close()
+        return result
+
+    def storeJSON(self, jsonString, comment):
+        '''Stores a JSON entry along with a timestamp and a comment.'''
+        c = self.db.cursor()
+        c.execute(('INSERT INTO storage VALUES (datetime'
+                   '(\'now\', \'localtime\'), ?, ?)'), (comment, jsonString))
+        c.close()
+        self.db.commit()
+
+    def retrieveJSON(self, timestamp):
+        '''Retrieves a JSON entry. Takes a timestamp string'''
+        c = self.db.cursor()
+        c.execute('SELECT * FROM storage WHERE timestamp = ?', (timestamp,))
+        result = c.fetchall()
+        c.close()
+        return result

backend/terahz.fcgi

@@ -0,0 +1,7 @@
+#!/usr/bin/python3
+# Minimal flup configuration for Flask
+from flup.server.fcgi import WSGIServer
+from app import app
+
+if __name__ == '__main__':
+    WSGIServer(app, bindAddress='/var/www/api/terahz.sock').run()

backend/venv/bin/flask

@@ -1,10 +0,0 @@
-#!/root/projekti/TeraHz/backend/venv/bin/python3
-# -*- coding: utf-8 -*-
-import re
-import sys
-
-from flask.cli import main
-
-if __name__ == '__main__':
-    sys.argv[0] = re.sub(r'(-script\.pyw?|\.exe)?$', '', sys.argv[0])
-    sys.exit(main())

backend/venv/bin/futurize

@@ -1,12 +0,0 @@
-#!/root/projekti/TeraHz/backend/venv/bin/python3
-# EASY-INSTALL-ENTRY-SCRIPT: 'future==0.17.1','console_scripts','futurize'
-__requires__ = 'future==0.17.1'
-import re
-import sys
-from pkg_resources import load_entry_point
-
-if __name__ == '__main__':
-    sys.argv[0] = re.sub(r'(-script\.pyw?|\.exe)?$', '', sys.argv[0])
-    sys.exit(
-        load_entry_point('future==0.17.1', 'console_scripts', 'futurize')()
-    )

backend/venv/bin/pasteurize

@@ -1,12 +0,0 @@
-#!/root/projekti/TeraHz/backend/venv/bin/python3
-# EASY-INSTALL-ENTRY-SCRIPT: 'future==0.17.1','console_scripts','pasteurize'
-__requires__ = 'future==0.17.1'
-import re
-import sys
-from pkg_resources import load_entry_point
-
-if __name__ == '__main__':
-    sys.argv[0] = re.sub(r'(-script\.pyw?|\.exe)?$', '', sys.argv[0])
-    sys.exit(
-        load_entry_point('future==0.17.1', 'console_scripts', 'pasteurize')()
-    )

backend/venv/bin/python

@@ -1 +0,0 @@
-python3

backend/venv/bin/python3

@@ -1 +0,0 @@
-/usr/bin/python3

backend/venv/lib/python3.6/site-packages/Click-7.0.dist-info/LICENSE.txt

@@ -1,39 +0,0 @@
-Copyright © 2014 by the Pallets team.
-
-Some rights reserved.
-
-Redistribution and use in source and binary forms of the software as
-well as documentation, with or without modification, are permitted
-provided that the following conditions are met:
-
--   Redistributions of source code must retain the above copyright
-    notice, this list of conditions and the following disclaimer.
-
--   Redistributions in binary form must reproduce the above copyright
-    notice, this list of conditions and the following disclaimer in the
-    documentation and/or other materials provided with the distribution.
-
--   Neither the name of the copyright holder nor the names of its
-    contributors may be used to endorse or promote products derived from
-    this software without specific prior written permission.
-
-THIS SOFTWARE AND DOCUMENTATION IS PROVIDED BY THE COPYRIGHT HOLDERS AND
-CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
-BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
-FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
-COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
-INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
-NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
-USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
-ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
-THIS SOFTWARE AND DOCUMENTATION, EVEN IF ADVISED OF THE POSSIBILITY OF
-SUCH DAMAGE.
-
-----
-
-Click uses parts of optparse written by Gregory P. Ward and maintained
-by the Python Software Foundation. This is limited to code in parser.py.
-
-Copyright © 2001-2006 Gregory P. Ward. All rights reserved.
-Copyright © 2002-2006 Python Software Foundation. All rights reserved.

backend/venv/lib/python3.6/site-packages/Click-7.0.dist-info/METADATA

@@ -1,121 +0,0 @@
-Metadata-Version: 2.1
-Name: Click
-Version: 7.0
-Summary: Composable command line interface toolkit
-Home-page: https://palletsprojects.com/p/click/
-Author: Armin Ronacher
-Author-email: armin.ronacher@active-4.com
-Maintainer: Pallets Team
-Maintainer-email: contact@palletsprojects.com
-License: BSD
-Project-URL: Documentation, https://click.palletsprojects.com/
-Project-URL: Code, https://github.com/pallets/click
-Project-URL: Issue tracker, https://github.com/pallets/click/issues
-Platform: UNKNOWN
-Classifier: Development Status :: 5 - Production/Stable
-Classifier: Intended Audience :: Developers
-Classifier: License :: OSI Approved :: BSD License
-Classifier: Operating System :: OS Independent
-Classifier: Programming Language :: Python
-Classifier: Programming Language :: Python :: 2
-Classifier: Programming Language :: Python :: 2.7
-Classifier: Programming Language :: Python :: 3
-Classifier: Programming Language :: Python :: 3.4
-Classifier: Programming Language :: Python :: 3.5
-Classifier: Programming Language :: Python :: 3.6
-Classifier: Programming Language :: Python :: 3.7
-Requires-Python: >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*
-
-\$ click\_
-==========
-
-Click is a Python package for creating beautiful command line interfaces
-in a composable way with as little code as necessary. It's the "Command
-Line Interface Creation Kit". It's highly configurable but comes with
-sensible defaults out of the box.
-
-It aims to make the process of writing command line tools quick and fun
-while also preventing any frustration caused by the inability to
-implement an intended CLI API.
-
-Click in three points:
-
--   Arbitrary nesting of commands
--   Automatic help page generation
--   Supports lazy loading of subcommands at runtime
-
-
-Installing
-----------
-
-Install and update using `pip`_:
-
-.. code-block:: text
-
-    $ pip install click
-
-Click supports Python 3.4 and newer, Python 2.7, and PyPy.
-
-.. _pip: https://pip.pypa.io/en/stable/quickstart/
-
-
-A Simple Example
-----------------
-
-What does it look like? Here is an example of a simple Click program:
-
-.. code-block:: python
-
-    import click
-
-    @click.command()
-    @click.option("--count", default=1, help="Number of greetings.")
-    @click.option("--name", prompt="Your name",
-                  help="The person to greet.")
-    def hello(count, name):
-        """Simple program that greets NAME for a total of COUNT times."""
-        for _ in range(count):
-            click.echo("Hello, %s!" % name)
-
-    if __name__ == '__main__':
-        hello()
-
-And what it looks like when run:
-
-.. code-block:: text
-
-    $ python hello.py --count=3
-    Your name: Click
-    Hello, Click!
-    Hello, Click!
-    Hello, Click!
-
-
-Donate
-------
-
-The Pallets organization develops and supports Click and other popular
-packages. In order to grow the community of contributors and users, and
-allow the maintainers to devote more time to the projects, `please
-donate today`_.
-
-.. _please donate today: https://palletsprojects.com/donate
-
-
-Links
------
-
-*   Website: https://palletsprojects.com/p/click/
-*   Documentation: https://click.palletsprojects.com/
-*   License: `BSD <https://github.com/pallets/click/blob/master/LICENSE.rst>`_
-*   Releases: https://pypi.org/project/click/
-*   Code: https://github.com/pallets/click
-*   Issue tracker: https://github.com/pallets/click/issues
-*   Test status:
-
-    *   Linux, Mac: https://travis-ci.org/pallets/click
-    *   Windows: https://ci.appveyor.com/project/pallets/click
-
-*   Test coverage: https://codecov.io/gh/pallets/click
-
-

backend/venv/lib/python3.6/site-packages/Click-7.0.dist-info/RECORD

@@ -1,40 +0,0 @@
-Click-7.0.dist-info/INSTALLER,sha256=zuuue4knoyJ-UwPPXg8fezS7VCrXJQrAP7zeNuwvFQg,4
-Click-7.0.dist-info/LICENSE.txt,sha256=4hIxn676T0Wcisk3_chVcECjyrivKTZsoqSNI5AlIlw,1876
-Click-7.0.dist-info/METADATA,sha256=-r8jeke3Zer4diRvT1MjFZuiJ6yTT_qFP39svLqdaLI,3516
-Click-7.0.dist-info/RECORD,,
-Click-7.0.dist-info/WHEEL,sha256=gduuPyBvFJQSQ0zdyxF7k0zynDXbIbvg5ZBHoXum5uk,110
-Click-7.0.dist-info/top_level.txt,sha256=J1ZQogalYS4pphY_lPECoNMfw0HzTSrZglC4Yfwo4xA,6
-click/__init__.py,sha256=HjGThQ7tef9kkwCV371TBnrf0SAi6fKfU_jtEnbYTvQ,2789
-click/__pycache__/__init__.cpython-36.pyc,,
-click/__pycache__/_bashcomplete.cpython-36.pyc,,
-click/__pycache__/_compat.cpython-36.pyc,,
-click/__pycache__/_termui_impl.cpython-36.pyc,,
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backend/venv/lib/python3.6/site-packages/Click-7.0.dist-info/top_level.txt

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backend/venv/lib/python3.6/site-packages/Flask-1.0.2.dist-info/LICENSE.txt

@@ -1,31 +0,0 @@
-Copyright © 2010 by the Pallets team.
-
-Some rights reserved.
-
-Redistribution and use in source and binary forms of the software as
-well as documentation, with or without modification, are permitted
-provided that the following conditions are met:
-
-* Redistributions of source code must retain the above copyright notice,
-  this list of conditions and the following disclaimer.
-
-* Redistributions in binary form must reproduce the above copyright
-  notice, this list of conditions and the following disclaimer in the
-  documentation and/or other materials provided with the distribution.
-
-* Neither the name of the copyright holder nor the names of its
-  contributors may be used to endorse or promote products derived from
-  this software without specific prior written permission.
-
-THIS SOFTWARE AND DOCUMENTATION IS PROVIDED BY THE COPYRIGHT HOLDERS AND
-CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
-BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
-FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
-COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
-INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
-NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
-USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
-ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
-THIS SOFTWARE AND DOCUMENTATION, EVEN IF ADVISED OF THE POSSIBILITY OF
-SUCH DAMAGE.

backend/venv/lib/python3.6/site-packages/Flask-1.0.2.dist-info/METADATA

@@ -1,130 +0,0 @@
-Metadata-Version: 2.1
-Name: Flask
-Version: 1.0.2
-Summary: A simple framework for building complex web applications.
-Home-page: https://www.palletsprojects.com/p/flask/
-Author: Armin Ronacher
-Author-email: armin.ronacher@active-4.com
-Maintainer: Pallets team
-Maintainer-email: contact@palletsprojects.com
-License: BSD
-Project-URL: Documentation, http://flask.pocoo.org/docs/
-Project-URL: Code, https://github.com/pallets/flask
-Project-URL: Issue tracker, https://github.com/pallets/flask/issues
-Platform: any
-Classifier: Development Status :: 5 - Production/Stable
-Classifier: Environment :: Web Environment
-Classifier: Framework :: Flask
-Classifier: Intended Audience :: Developers
-Classifier: License :: OSI Approved :: BSD License
-Classifier: Operating System :: OS Independent
-Classifier: Programming Language :: Python
-Classifier: Programming Language :: Python :: 2
-Classifier: Programming Language :: Python :: 2.7
-Classifier: Programming Language :: Python :: 3
-Classifier: Programming Language :: Python :: 3.4
-Classifier: Programming Language :: Python :: 3.5
-Classifier: Programming Language :: Python :: 3.6
-Classifier: Topic :: Internet :: WWW/HTTP :: Dynamic Content
-Classifier: Topic :: Internet :: WWW/HTTP :: WSGI :: Application
-Classifier: Topic :: Software Development :: Libraries :: Application Frameworks
-Classifier: Topic :: Software Development :: Libraries :: Python Modules
-Provides-Extra: dev
-Provides-Extra: docs
-Provides-Extra: dotenv
-Requires-Dist: Werkzeug (>=0.14)
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-Requires-Dist: click (>=5.1)
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-Requires-Dist: coverage; extra == 'dev'
-Requires-Dist: tox; extra == 'dev'
-Requires-Dist: sphinx; extra == 'dev'
-Requires-Dist: pallets-sphinx-themes; extra == 'dev'
-Requires-Dist: sphinxcontrib-log-cabinet; extra == 'dev'
-Provides-Extra: docs
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-Requires-Dist: pallets-sphinx-themes; extra == 'docs'
-Requires-Dist: sphinxcontrib-log-cabinet; extra == 'docs'
-Provides-Extra: dotenv
-Requires-Dist: python-dotenv; extra == 'dotenv'
-
-Flask
-=====
-
-Flask is a lightweight `WSGI`_ web application framework. It is designed
-to make getting started quick and easy, with the ability to scale up to
-complex applications. It began as a simple wrapper around `Werkzeug`_
-and `Jinja`_ and has become one of the most popular Python web
-application frameworks.
-
-Flask offers suggestions, but doesn't enforce any dependencies or
-project layout. It is up to the developer to choose the tools and
-libraries they want to use. There are many extensions provided by the
-community that make adding new functionality easy.
-
-
-Installing
-----------
-
-Install and update using `pip`_:
-
-.. code-block:: text
-
-    pip install -U Flask
-
-
-A Simple Example
-----------------
-
-.. code-block:: python
-
-    from flask import Flask
-
-    app = Flask(__name__)
-
-    @app.route('/')
-    def hello():
-        return 'Hello, World!'
-
-.. code-block:: text
-
-    $ FLASK_APP=hello.py flask run
-     * Serving Flask app "hello"
-     * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
-
-
-Donate
-------
-
-The Pallets organization develops and supports Flask and the libraries
-it uses. In order to grow the community of contributors and users, and
-allow the maintainers to devote more time to the projects, `please
-donate today`_.
-
-.. _please donate today: https://psfmember.org/civicrm/contribute/transact?reset=1&id=20
-
-
-Links
------
-
-* Website: https://www.palletsprojects.com/p/flask/
-* Documentation: http://flask.pocoo.org/docs/
-* License: `BSD <https://github.com/pallets/flask/blob/master/LICENSE>`_
-* Releases: https://pypi.org/project/Flask/
-* Code: https://github.com/pallets/flask
-* Issue tracker: https://github.com/pallets/flask/issues
-* Test status:
-
-  * Linux, Mac: https://travis-ci.org/pallets/flask
-  * Windows: https://ci.appveyor.com/project/pallets/flask
-
-* Test coverage: https://codecov.io/gh/pallets/flask
-
-.. _WSGI: https://wsgi.readthedocs.io
-.. _Werkzeug: https://www.palletsprojects.com/p/werkzeug/
-.. _Jinja: https://www.palletsprojects.com/p/jinja/
-.. _pip: https://pip.pypa.io/en/stable/quickstart/
-
-

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backend/venv/lib/python3.6/site-packages/Flask-1.0.2.dist-info/WHEEL

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backend/venv/lib/python3.6/site-packages/Flask-1.0.2.dist-info/entry_points.txt

@@ -1,3 +0,0 @@
-[console_scripts]
-flask = flask.cli:main
-

backend/venv/lib/python3.6/site-packages/Flask-1.0.2.dist-info/top_level.txt

@@ -1 +0,0 @@
-flask

backend/venv/lib/python3.6/site-packages/Jinja2-2.10.dist-info/DESCRIPTION.rst

@@ -1,37 +0,0 @@
-
-Jinja2
-~~~~~~
-
-Jinja2 is a template engine written in pure Python.  It provides a
-`Django`_ inspired non-XML syntax but supports inline expressions and
-an optional `sandboxed`_ environment.
-
-Nutshell
---------
-
-Here a small example of a Jinja template::
-
-    {% extends 'base.html' %}
-    {% block title %}Memberlist{% endblock %}
-    {% block content %}
-      <ul>
-      {% for user in users %}
-        <li><a href="{{ user.url }}">{{ user.username }}</a></li>
-      {% endfor %}
-      </ul>
-    {% endblock %}
-
-Philosophy
-----------
-
-Application logic is for the controller but don't try to make the life
-for the template designer too hard by giving him too few functionality.
-
-For more informations visit the new `Jinja2 webpage`_ and `documentation`_.
-
-.. _sandboxed: https://en.wikipedia.org/wiki/Sandbox_(computer_security)
-.. _Django: https://www.djangoproject.com/
-.. _Jinja2 webpage: http://jinja.pocoo.org/
-.. _documentation: http://jinja.pocoo.org/2/documentation/
-
-

backend/venv/lib/python3.6/site-packages/Jinja2-2.10.dist-info/LICENSE.txt

@@ -1,31 +0,0 @@
-Copyright (c) 2009 by the Jinja Team, see AUTHORS for more details.
-
-Some rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are
-met:
-
-    * Redistributions of source code must retain the above copyright
-      notice, this list of conditions and the following disclaimer.
-
-    * Redistributions in binary form must reproduce the above
-      copyright notice, this list of conditions and the following
-      disclaimer in the documentation and/or other materials provided
-      with the distribution.
-
-    * The names of the contributors may not be used to endorse or
-      promote products derived from this software without specific
-      prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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backend/venv/lib/python3.6/site-packages/Jinja2-2.10.dist-info/METADATA

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-Name: Jinja2
-Version: 2.10
-Summary: A small but fast and easy to use stand-alone template engine written in pure python.
-Home-page: http://jinja.pocoo.org/
-Author: Armin Ronacher
-Author-email: armin.ronacher@active-4.com
-License: BSD
-Description-Content-Type: UNKNOWN
-Platform: UNKNOWN
-Classifier: Development Status :: 5 - Production/Stable
-Classifier: Environment :: Web Environment
-Classifier: Intended Audience :: Developers
-Classifier: License :: OSI Approved :: BSD License
-Classifier: Operating System :: OS Independent
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-Classifier: Topic :: Software Development :: Libraries :: Python Modules
-Classifier: Topic :: Text Processing :: Markup :: HTML
-Requires-Dist: MarkupSafe (>=0.23)
-Provides-Extra: i18n
-Requires-Dist: Babel (>=0.8); extra == 'i18n'
-
-
-Jinja2
-~~~~~~
-
-Jinja2 is a template engine written in pure Python.  It provides a
-`Django`_ inspired non-XML syntax but supports inline expressions and
-an optional `sandboxed`_ environment.
-
-Nutshell
---------
-
-Here a small example of a Jinja template::
-
-    {% extends 'base.html' %}
-    {% block title %}Memberlist{% endblock %}
-    {% block content %}
-      <ul>
-      {% for user in users %}
-        <li><a href="{{ user.url }}">{{ user.username }}</a></li>
-      {% endfor %}
-      </ul>
-    {% endblock %}
-
-Philosophy
-----------
-
-Application logic is for the controller but don't try to make the life
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-
-For more informations visit the new `Jinja2 webpage`_ and `documentation`_.
-
-.. _sandboxed: https://en.wikipedia.org/wiki/Sandbox_(computer_security)
-.. _Django: https://www.djangoproject.com/
-.. _Jinja2 webpage: http://jinja.pocoo.org/
-.. _documentation: http://jinja.pocoo.org/2/documentation/
-
-

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backend/venv/lib/python3.6/site-packages/Jinja2-2.10.dist-info/entry_points.txt

@@ -1,4 +0,0 @@
-
-    [babel.extractors]
-    jinja2 = jinja2.ext:babel_extract[i18n]
-    

backend/venv/lib/python3.6/site-packages/Jinja2-2.10.dist-info/metadata.json

@@ -1 +0,0 @@
-{"classifiers": ["Development Status :: 5 - Production/Stable", "Environment :: Web Environment", "Intended Audience :: Developers", "License :: OSI Approved :: BSD License", "Operating System :: OS Independent", "Programming Language :: Python", "Programming Language :: Python :: 2", "Programming Language :: Python :: 2.6", "Programming Language :: Python :: 2.7", "Programming Language :: Python :: 3", "Programming Language :: Python :: 3.3", "Programming Language :: Python :: 3.4", "Programming Language :: Python :: 3.5", "Programming Language :: Python :: 3.6", "Topic :: Internet :: WWW/HTTP :: Dynamic Content", "Topic :: Software Development :: Libraries :: Python Modules", "Topic :: Text Processing :: Markup :: HTML"], "description_content_type": "UNKNOWN", "extensions": {"python.details": {"contacts": [{"email": "armin.ronacher@active-4.com", "name": "Armin Ronacher", "role": "author"}], "document_names": {"description": "DESCRIPTION.rst", "license": "LICENSE.txt"}, "project_urls": {"Home": "http://jinja.pocoo.org/"}}, "python.exports": {"babel.extractors": {"jinja2": "jinja2.ext:babel_extract [i18n]"}}}, "extras": ["i18n"], "generator": "bdist_wheel (0.30.0)", "license": "BSD", "metadata_version": "2.0", "name": "Jinja2", "run_requires": [{"extra": "i18n", "requires": ["Babel (>=0.8)"]}, {"requires": ["MarkupSafe (>=0.23)"]}], "summary": "A small but fast and easy to use stand-alone template engine written in pure python.", "version": "2.10"}

backend/venv/lib/python3.6/site-packages/Jinja2-2.10.dist-info/top_level.txt

@@ -1 +0,0 @@
-jinja2

backend/venv/lib/python3.6/site-packages/MarkupSafe-1.1.0.dist-info/LICENSE.txt

@@ -1,33 +0,0 @@
-`BSD 3-Clause <https://opensource.org/licenses/BSD-3-Clause>`_
-
-Copyright © 2010 by the Pallets team.
-
-Some rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are
-met:
-
--   Redistributions of source code must retain the above copyright
-    notice, this list of conditions and the following disclaimer.
-
--   Redistributions in binary form must reproduce the above copyright
-    notice, this list of conditions and the following disclaimer in the
-    documentation and/or other materials provided with the distribution.
-
--   Neither the name of the copyright holder nor the names of its
-    contributors may be used to endorse or promote products derived from
-    this software without specific prior written permission.
-
-THIS SOFTWARE AND DOCUMENTATION IS PROVIDED BY THE COPYRIGHT HOLDERS AND
-CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
-BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
-FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
-COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
-INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
-NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
-USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
-ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
-THIS SOFTWARE AND DOCUMENTATION, EVEN IF ADVISED OF THE POSSIBILITY OF
-SUCH DAMAGE.

backend/venv/lib/python3.6/site-packages/MarkupSafe-1.1.0.dist-info/METADATA

@@ -1,103 +0,0 @@
-Metadata-Version: 2.1
-Name: MarkupSafe
-Version: 1.1.0
-Summary: Safely add untrusted strings to HTML/XML markup.
-Home-page: https://www.palletsprojects.com/p/markupsafe/
-Author: Armin Ronacher
-Author-email: armin.ronacher@active-4.com
-Maintainer: Pallets Team
-Maintainer-email: contact@palletsprojects.com
-License: BSD
-Project-URL: Documentation, https://markupsafe.palletsprojects.com/
-Project-URL: Code, https://github.com/pallets/markupsafe
-Project-URL: Issue tracker, https://github.com/pallets/markupsafe/issues
-Platform: UNKNOWN
-Classifier: Development Status :: 5 - Production/Stable
-Classifier: Environment :: Web Environment
-Classifier: Intended Audience :: Developers
-Classifier: License :: OSI Approved :: BSD License
-Classifier: Operating System :: OS Independent
-Classifier: Programming Language :: Python
-Classifier: Programming Language :: Python :: 2
-Classifier: Programming Language :: Python :: 2.7
-Classifier: Programming Language :: Python :: 3
-Classifier: Programming Language :: Python :: 3.4
-Classifier: Programming Language :: Python :: 3.5
-Classifier: Programming Language :: Python :: 3.6
-Classifier: Programming Language :: Python :: 3.7
-Classifier: Topic :: Internet :: WWW/HTTP :: Dynamic Content
-Classifier: Topic :: Software Development :: Libraries :: Python Modules
-Classifier: Topic :: Text Processing :: Markup :: HTML
-Requires-Python: >=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*
-
-MarkupSafe
-==========
-
-MarkupSafe implements a text object that escapes characters so it is
-safe to use in HTML and XML. Characters that have special meanings are
-replaced so that they display as the actual characters. This mitigates
-injection attacks, meaning untrusted user input can safely be displayed
-on a page.
-
-
-Installing
-----------
-
-Install and update using `pip`_:
-
-.. code-block:: text
-
-    pip install -U MarkupSafe
-
-.. _pip: https://pip.pypa.io/en/stable/quickstart/
-
-
-Examples
---------
-
-.. code-block:: pycon
-
-    >>> from markupsafe import Markup, escape
-    >>> # escape replaces special characters and wraps in Markup
-    >>> escape('<script>alert(document.cookie);</script>')
-    Markup(u'&lt;script&gt;alert(document.cookie);&lt;/script&gt;')
-    >>> # wrap in Markup to mark text "safe" and prevent escaping
-    >>> Markup('<strong>Hello</strong>')
-    Markup('<strong>hello</strong>')
-    >>> escape(Markup('<strong>Hello</strong>'))
-    Markup('<strong>hello</strong>')
-    >>> # Markup is a text subclass (str on Python 3, unicode on Python 2)
-    >>> # methods and operators escape their arguments
-    >>> template = Markup("Hello <em>%s</em>")
-    >>> template % '"World"'
-    Markup('Hello <em>&#34;World&#34;</em>')
-
-
-Donate
-------
-
-The Pallets organization develops and supports MarkupSafe and other
-libraries that use it. In order to grow the community of contributors
-and users, and allow the maintainers to devote more time to the
-projects, `please donate today`_.
-
-.. _please donate today: https://psfmember.org/civicrm/contribute/transact?reset=1&id=20
-
-
-Links
------
-
-*   Website: https://www.palletsprojects.com/p/markupsafe/
-*   Documentation: https://markupsafe.palletsprojects.com/
-*   License: `BSD <https://github.com/pallets/markupsafe/blob/master/LICENSE.rst>`_
-*   Releases: https://pypi.org/project/MarkupSafe/
-*   Code: https://github.com/pallets/markupsafe
-*   Issue tracker: https://github.com/pallets/markupsafe/issues
-*   Test status:
-
-    *   Linux, Mac: https://travis-ci.org/pallets/markupsafe
-    *   Windows: https://ci.appveyor.com/project/pallets/markupsafe
-
-*   Test coverage: https://codecov.io/gh/pallets/markupsafe
-
-

backend/venv/lib/python3.6/site-packages/MarkupSafe-1.1.0.dist-info/RECORD

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-markupsafe/__init__.py,sha256=T5J4pS7LRx1xRqfV3xz-QN_D9pSmfVDJnTrc2cTO4Ro,10164
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backend/venv/lib/python3.6/site-packages/MarkupSafe-1.1.0.dist-info/top_level.txt

@@ -1 +0,0 @@
-markupsafe

backend/venv/lib/python3.6/site-packages/PyYAML-3.13.egg-info/PKG-INFO

@@ -1,33 +0,0 @@
-Metadata-Version: 1.1
-Name: PyYAML
-Version: 3.13
-Summary: YAML parser and emitter for Python
-Home-page: http://pyyaml.org/wiki/PyYAML
-Author: Kirill Simonov
-Author-email: xi@resolvent.net
-License: MIT
-Download-URL: http://pyyaml.org/download/pyyaml/PyYAML-3.13.tar.gz
-Description: YAML is a data serialization format designed for human readability
-        and interaction with scripting languages.  PyYAML is a YAML parser
-        and emitter for Python.
-        
-        PyYAML features a complete YAML 1.1 parser, Unicode support, pickle
-        support, capable extension API, and sensible error messages.  PyYAML
-        supports standard YAML tags and provides Python-specific tags that
-        allow to represent an arbitrary Python object.
-        
-        PyYAML is applicable for a broad range of tasks from complex
-        configuration files to object serialization and persistance.
-Platform: Any
-Classifier: Development Status :: 5 - Production/Stable
-Classifier: Intended Audience :: Developers
-Classifier: License :: OSI Approved :: MIT License
-Classifier: Operating System :: OS Independent
-Classifier: Programming Language :: Python
-Classifier: Programming Language :: Python :: 2
-Classifier: Programming Language :: Python :: 2.7
-Classifier: Programming Language :: Python :: 3
-Classifier: Programming Language :: Python :: 3.4
-Classifier: Programming Language :: Python :: 3.5
-Classifier: Topic :: Software Development :: Libraries :: Python Modules
-Classifier: Topic :: Text Processing :: Markup

backend/venv/lib/python3.6/site-packages/PyYAML-3.13.egg-info/SOURCES.txt

@@ -1,28 +0,0 @@
-README
-setup.cfg
-setup.py
-ext/_yaml.c
-ext/_yaml.h
-ext/_yaml.pxd
-ext/_yaml.pyx
-lib3/PyYAML.egg-info/PKG-INFO
-lib3/PyYAML.egg-info/SOURCES.txt
-lib3/PyYAML.egg-info/dependency_links.txt
-lib3/PyYAML.egg-info/top_level.txt
-lib3/yaml/__init__.py
-lib3/yaml/composer.py
-lib3/yaml/constructor.py
-lib3/yaml/cyaml.py
-lib3/yaml/dumper.py
-lib3/yaml/emitter.py
-lib3/yaml/error.py
-lib3/yaml/events.py
-lib3/yaml/loader.py
-lib3/yaml/nodes.py
-lib3/yaml/parser.py
-lib3/yaml/reader.py
-lib3/yaml/representer.py
-lib3/yaml/resolver.py
-lib3/yaml/scanner.py
-lib3/yaml/serializer.py
-lib3/yaml/tokens.py

backend/venv/lib/python3.6/site-packages/PyYAML-3.13.egg-info/dependency_links.txt

@@ -1 +0,0 @@
-

backend/venv/lib/python3.6/site-packages/PyYAML-3.13.egg-info/installed-files.txt

@@ -1,38 +0,0 @@
-../yaml/__init__.py
-../yaml/__pycache__/__init__.cpython-36.pyc
-../yaml/__pycache__/composer.cpython-36.pyc
-../yaml/__pycache__/constructor.cpython-36.pyc
-../yaml/__pycache__/cyaml.cpython-36.pyc
-../yaml/__pycache__/dumper.cpython-36.pyc
-../yaml/__pycache__/emitter.cpython-36.pyc
-../yaml/__pycache__/error.cpython-36.pyc
-../yaml/__pycache__/events.cpython-36.pyc
-../yaml/__pycache__/loader.cpython-36.pyc
-../yaml/__pycache__/nodes.cpython-36.pyc
-../yaml/__pycache__/parser.cpython-36.pyc
-../yaml/__pycache__/reader.cpython-36.pyc
-../yaml/__pycache__/representer.cpython-36.pyc
-../yaml/__pycache__/resolver.cpython-36.pyc
-../yaml/__pycache__/scanner.cpython-36.pyc
-../yaml/__pycache__/serializer.cpython-36.pyc
-../yaml/__pycache__/tokens.cpython-36.pyc
-../yaml/composer.py
-../yaml/constructor.py
-../yaml/cyaml.py
-../yaml/dumper.py
-../yaml/emitter.py
-../yaml/error.py
-../yaml/events.py
-../yaml/loader.py
-../yaml/nodes.py
-../yaml/parser.py
-../yaml/reader.py
-../yaml/representer.py
-../yaml/resolver.py
-../yaml/scanner.py
-../yaml/serializer.py
-../yaml/tokens.py
-PKG-INFO
-SOURCES.txt
-dependency_links.txt
-top_level.txt

backend/venv/lib/python3.6/site-packages/PyYAML-3.13.egg-info/top_level.txt

@@ -1,2 +0,0 @@
-_yaml
-yaml

backend/venv/lib/python3.6/site-packages/Werkzeug-0.14.1.dist-info/DESCRIPTION.rst

@@ -1,80 +0,0 @@
-Werkzeug
-========
-
-Werkzeug is a comprehensive `WSGI`_ web application library. It began as
-a simple collection of various utilities for WSGI applications and has
-become one of the most advanced WSGI utility libraries.
-
-It includes:
-
-* An interactive debugger that allows inspecting stack traces and source
-  code in the browser with an interactive interpreter for any frame in
-  the stack.
-* A full-featured request object with objects to interact with headers,
-  query args, form data, files, and cookies.
-* A response object that can wrap other WSGI applications and handle
-  streaming data.
-* A routing system for matching URLs to endpoints and generating URLs
-  for endpoints, with an extensible system for capturing variables from
-  URLs.
-* HTTP utilities to handle entity tags, cache control, dates, user
-  agents, cookies, files, and more.
-* A threaded WSGI server for use while developing applications locally.
-* A test client for simulating HTTP requests during testing without
-  requiring running a server.
-
-Werkzeug is Unicode aware and doesn't enforce any dependencies. It is up
-to the developer to choose a template engine, database adapter, and even
-how to handle requests. It can be used to build all sorts of end user
-applications such as blogs, wikis, or bulletin boards.
-
-`Flask`_ wraps Werkzeug, using it to handle the details of WSGI while
-providing more structure and patterns for defining powerful
-applications.
-
-
-Installing
-----------
-
-Install and update using `pip`_:
-
-.. code-block:: text
-
-    pip install -U Werkzeug
-
-
-A Simple Example
-----------------
-
-.. code-block:: python
-
-    from werkzeug.wrappers import Request, Response
-
-    @Request.application
-    def application(request):
-        return Response('Hello, World!')
-
-    if __name__ == '__main__':
-        from werkzeug.serving import run_simple
-        run_simple('localhost', 4000, application)
-
-
-Links
------
-
-* Website: https://www.palletsprojects.com/p/werkzeug/
-* Releases: https://pypi.org/project/Werkzeug/
-* Code: https://github.com/pallets/werkzeug
-* Issue tracker: https://github.com/pallets/werkzeug/issues
-* Test status:
-
-  * Linux, Mac: https://travis-ci.org/pallets/werkzeug
-  * Windows: https://ci.appveyor.com/project/davidism/werkzeug
-
-* Test coverage: https://codecov.io/gh/pallets/werkzeug
-
-.. _WSGI: https://wsgi.readthedocs.io/en/latest/
-.. _Flask: https://www.palletsprojects.com/p/flask/
-.. _pip: https://pip.pypa.io/en/stable/quickstart/
-
-

backend/venv/lib/python3.6/site-packages/Werkzeug-0.14.1.dist-info/LICENSE.txt

@@ -1,31 +0,0 @@
-Copyright © 2007 by the Pallets team.
-
-Some rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are
-met:
-
-* Redistributions of source code must retain the above copyright notice,
-  this list of conditions and the following disclaimer.
-
-* Redistributions in binary form must reproduce the above copyright
-  notice, this list of conditions and the following disclaimer in the
-  documentation and/or other materials provided with the distribution.
-
-* Neither the name of the copyright holder nor the names of its
-  contributors may be used to endorse or promote products derived from
-  this software without specific prior written permission.
-
-THIS SOFTWARE AND DOCUMENTATION IS PROVIDED BY THE COPYRIGHT HOLDERS AND
-CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
-BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
-FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
-COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
-INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
-NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
-USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
-ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
-THIS SOFTWARE AND DOCUMENTATION, EVEN IF ADVISED OF THE POSSIBILITY OF
-SUCH DAMAGE.

backend/venv/lib/python3.6/site-packages/Werkzeug-0.14.1.dist-info/METADATA

@@ -1,116 +0,0 @@
-Metadata-Version: 2.0
-Name: Werkzeug
-Version: 0.14.1
-Summary: The comprehensive WSGI web application library.
-Home-page: https://www.palletsprojects.org/p/werkzeug/
-Author: Armin Ronacher
-Author-email: armin.ronacher@active-4.com
-License: BSD
-Description-Content-Type: UNKNOWN
-Platform: any
-Classifier: Development Status :: 5 - Production/Stable
-Classifier: Environment :: Web Environment
-Classifier: Intended Audience :: Developers
-Classifier: License :: OSI Approved :: BSD License
-Classifier: Operating System :: OS Independent
-Classifier: Programming Language :: Python
-Classifier: Programming Language :: Python :: 2
-Classifier: Programming Language :: Python :: 2.6
-Classifier: Programming Language :: Python :: 2.7
-Classifier: Programming Language :: Python :: 3
-Classifier: Programming Language :: Python :: 3.3
-Classifier: Programming Language :: Python :: 3.4
-Classifier: Programming Language :: Python :: 3.5
-Classifier: Programming Language :: Python :: 3.6
-Classifier: Topic :: Internet :: WWW/HTTP :: Dynamic Content
-Classifier: Topic :: Software Development :: Libraries :: Python Modules
-Provides-Extra: dev
-Requires-Dist: coverage; extra == 'dev'
-Requires-Dist: pytest; extra == 'dev'
-Requires-Dist: sphinx; extra == 'dev'
-Requires-Dist: tox; extra == 'dev'
-Provides-Extra: termcolor
-Requires-Dist: termcolor; extra == 'termcolor'
-Provides-Extra: watchdog
-Requires-Dist: watchdog; extra == 'watchdog'
-
-Werkzeug
-========
-
-Werkzeug is a comprehensive `WSGI`_ web application library. It began as
-a simple collection of various utilities for WSGI applications and has
-become one of the most advanced WSGI utility libraries.
-
-It includes:
-
-* An interactive debugger that allows inspecting stack traces and source
-  code in the browser with an interactive interpreter for any frame in
-  the stack.
-* A full-featured request object with objects to interact with headers,
-  query args, form data, files, and cookies.
-* A response object that can wrap other WSGI applications and handle
-  streaming data.
-* A routing system for matching URLs to endpoints and generating URLs
-  for endpoints, with an extensible system for capturing variables from
-  URLs.
-* HTTP utilities to handle entity tags, cache control, dates, user
-  agents, cookies, files, and more.
-* A threaded WSGI server for use while developing applications locally.
-* A test client for simulating HTTP requests during testing without
-  requiring running a server.
-
-Werkzeug is Unicode aware and doesn't enforce any dependencies. It is up
-to the developer to choose a template engine, database adapter, and even
-how to handle requests. It can be used to build all sorts of end user
-applications such as blogs, wikis, or bulletin boards.
-
-`Flask`_ wraps Werkzeug, using it to handle the details of WSGI while
-providing more structure and patterns for defining powerful
-applications.
-
-
-Installing
-----------
-
-Install and update using `pip`_:
-
-.. code-block:: text
-
-    pip install -U Werkzeug
-
-
-A Simple Example
-----------------
-
-.. code-block:: python
-
-    from werkzeug.wrappers import Request, Response
-
-    @Request.application
-    def application(request):
-        return Response('Hello, World!')
-
-    if __name__ == '__main__':
-        from werkzeug.serving import run_simple
-        run_simple('localhost', 4000, application)
-
-
-Links
------
-
-* Website: https://www.palletsprojects.com/p/werkzeug/
-* Releases: https://pypi.org/project/Werkzeug/
-* Code: https://github.com/pallets/werkzeug
-* Issue tracker: https://github.com/pallets/werkzeug/issues
-* Test status:
-
-  * Linux, Mac: https://travis-ci.org/pallets/werkzeug
-  * Windows: https://ci.appveyor.com/project/davidism/werkzeug
-
-* Test coverage: https://codecov.io/gh/pallets/werkzeug
-
-.. _WSGI: https://wsgi.readthedocs.io/en/latest/
-.. _Flask: https://www.palletsprojects.com/p/flask/
-.. _pip: https://pip.pypa.io/en/stable/quickstart/
-
-

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backend/venv/lib/python3.6/site-packages/Werkzeug-0.14.1.dist-info/WHEEL

@@ -1,6 +0,0 @@
-Wheel-Version: 1.0
-Generator: bdist_wheel (0.26.0)
-Root-Is-Purelib: true
-Tag: py2-none-any
-Tag: py3-none-any
-

backend/venv/lib/python3.6/site-packages/Werkzeug-0.14.1.dist-info/metadata.json

@@ -1 +0,0 @@
-{"generator": "bdist_wheel (0.26.0)", "summary": "The comprehensive WSGI web application library.", "classifiers": ["Development Status :: 5 - Production/Stable", "Environment :: Web Environment", "Intended Audience :: Developers", "License :: OSI Approved :: BSD License", "Operating System :: OS Independent", "Programming Language :: Python", "Programming Language :: Python :: 2", "Programming Language :: Python :: 2.6", "Programming Language :: Python :: 2.7", "Programming Language :: Python :: 3", "Programming Language :: Python :: 3.3", "Programming Language :: Python :: 3.4", "Programming Language :: Python :: 3.5", "Programming Language :: Python :: 3.6", "Topic :: Internet :: WWW/HTTP :: Dynamic Content", "Topic :: Software Development :: Libraries :: Python Modules"], "description_content_type": "UNKNOWN", "extensions": {"python.details": {"project_urls": {"Home": "https://www.palletsprojects.org/p/werkzeug/"}, "contacts": [{"email": "armin.ronacher@active-4.com", "name": "Armin Ronacher", "role": "author"}], "document_names": {"description": "DESCRIPTION.rst", "license": "LICENSE.txt"}}}, "license": "BSD", "metadata_version": "2.0", "name": "Werkzeug", "platform": "any", "extras": ["dev", "termcolor", "watchdog"], "run_requires": [{"requires": ["coverage", "pytest", "sphinx", "tox"], "extra": "dev"}, {"requires": ["termcolor"], "extra": "termcolor"}, {"requires": ["watchdog"], "extra": "watchdog"}], "version": "0.14.1"}

backend/venv/lib/python3.6/site-packages/Werkzeug-0.14.1.dist-info/top_level.txt

@@ -1 +0,0 @@
-werkzeug

backend/venv/lib/python3.6/site-packages/backports/configparser/helpers.py

@@ -1,171 +0,0 @@
-#!/usr/bin/env python
-# -*- coding: utf-8 -*-
-
-from __future__ import absolute_import
-from __future__ import division
-from __future__ import print_function
-from __future__ import unicode_literals
-
-from collections import MutableMapping
-try:
-    from collections import UserDict
-except ImportError:
-    from UserDict import UserDict
-
-try:
-    from collections import OrderedDict
-except ImportError:
-    from ordereddict import OrderedDict
-
-from io import open
-import sys
-try:
-    from thread import get_ident
-except ImportError:
-    try:
-        from _thread import get_ident
-    except ImportError:
-        from _dummy_thread import get_ident
-
-
-PY2 = sys.version_info[0] == 2
-PY3 = sys.version_info[0] == 3
-
-str = type('str')
-
-
-def from_none(exc):
-    """raise from_none(ValueError('a')) == raise ValueError('a') from None"""
-    exc.__cause__ = None
-    exc.__suppress_context__ = True
-    return exc
-
-
-# from reprlib 3.2.1
-def recursive_repr(fillvalue='...'):
-    'Decorator to make a repr function return fillvalue for a recursive call'
-
-    def decorating_function(user_function):
-        repr_running = set()
-
-        def wrapper(self):
-            key = id(self), get_ident()
-            if key in repr_running:
-                return fillvalue
-            repr_running.add(key)
-            try:
-                result = user_function(self)
-            finally:
-                repr_running.discard(key)
-            return result
-
-        # Can't use functools.wraps() here because of bootstrap issues
-        wrapper.__module__ = getattr(user_function, '__module__')
-        wrapper.__doc__ = getattr(user_function, '__doc__')
-        wrapper.__name__ = getattr(user_function, '__name__')
-        wrapper.__annotations__ = getattr(user_function, '__annotations__', {})
-        return wrapper
-
-    return decorating_function
-
-# from collections 3.2.1
-class _ChainMap(MutableMapping):
-    ''' A ChainMap groups multiple dicts (or other mappings) together
-    to create a single, updateable view.
-
-    The underlying mappings are stored in a list.  That list is public and can
-    accessed or updated using the *maps* attribute.  There is no other state.
-
-    Lookups search the underlying mappings successively until a key is found.
-    In contrast, writes, updates, and deletions only operate on the first
-    mapping.
-
-    '''
-
-    def __init__(self, *maps):
-        '''Initialize a ChainMap by setting *maps* to the given mappings.
-        If no mappings are provided, a single empty dictionary is used.
-
-        '''
-        self.maps = list(maps) or [{}]          # always at least one map
-
-    def __missing__(self, key):
-        raise KeyError(key)
-
-    def __getitem__(self, key):
-        for mapping in self.maps:
-            try:
-                return mapping[key]             # can't use 'key in mapping' with defaultdict
-            except KeyError:
-                pass
-        return self.__missing__(key)            # support subclasses that define __missing__
-
-    def get(self, key, default=None):
-        return self[key] if key in self else default
-
-    def __len__(self):
-        return len(set().union(*self.maps))     # reuses stored hash values if possible
-
-    def __iter__(self):
-        return iter(set().union(*self.maps))
-
-    def __contains__(self, key):
-        return any(key in m for m in self.maps)
-
-    @recursive_repr()
-    def __repr__(self):
-        return '{0.__class__.__name__}({1})'.format(
-            self, ', '.join(map(repr, self.maps)))
-
-    @classmethod
-    def fromkeys(cls, iterable, *args):
-        'Create a ChainMap with a single dict created from the iterable.'
-        return cls(dict.fromkeys(iterable, *args))
-
-    def copy(self):
-        'New ChainMap or subclass with a new copy of maps[0] and refs to maps[1:]'
-        return self.__class__(self.maps[0].copy(), *self.maps[1:])
-
-    __copy__ = copy
-
-    def new_child(self):                        # like Django's Context.push()
-        'New ChainMap with a new dict followed by all previous maps.'
-        return self.__class__({}, *self.maps)
-
-    @property
-    def parents(self):                          # like Django's Context.pop()
-        'New ChainMap from maps[1:].'
-        return self.__class__(*self.maps[1:])
-
-    def __setitem__(self, key, value):
-        self.maps[0][key] = value
-
-    def __delitem__(self, key):
-        try:
-            del self.maps[0][key]
-        except KeyError:
-            raise KeyError('Key not found in the first mapping: {!r}'.format(key))
-
-    def popitem(self):
-        'Remove and return an item pair from maps[0]. Raise KeyError is maps[0] is empty.'
-        try:
-            return self.maps[0].popitem()
-        except KeyError:
-            raise KeyError('No keys found in the first mapping.')
-
-    def pop(self, key, *args):
-        'Remove *key* from maps[0] and return its value. Raise KeyError if *key* not in maps[0].'
-        try:
-            return self.maps[0].pop(key, *args)
-        except KeyError:
-            raise KeyError('Key not found in the first mapping: {!r}'.format(key))
-
-    def clear(self):
-        'Clear maps[0], leaving maps[1:] intact.'
-        self.maps[0].clear()
-
-
-try:
-    from collections import ChainMap
-except ImportError:
-    ChainMap = _ChainMap

backend/venv/lib/python3.6/site-packages/blinker-1.4.egg-info/PKG-INFO

@@ -1,101 +0,0 @@
-Metadata-Version: 1.1
-Name: blinker
-Version: 1.4
-Summary: Fast, simple object-to-object and broadcast signaling
-Home-page: http://pythonhosted.org/blinker/
-Author: Jason Kirtland
-Author-email: jek@discorporate.us
-License: MIT License
-Description: [![Build Status](https://travis-ci.org/jek/blinker.svg?branch=master)](https://travis-ci.org/jek/blinker)
-        
-        
-        # Blinker
-        
-        Blinker provides a fast dispatching system that allows any number of
-        interested parties to subscribe to events, or "signals".
-        
-        Signal receivers can subscribe to specific senders or receive signals
-        sent by any sender.
-        
-            >>> from blinker import signal
-            >>> started = signal('round-started')
-            >>> def each(round):
-            ...     print "Round %s!" % round
-            ...
-            >>> started.connect(each)
-            
-            >>> def round_two(round):
-            ...     print "This is round two."
-            ...
-            >>> started.connect(round_two, sender=2)
-          
-            >>> for round in range(1, 4):
-            ...     started.send(round)
-            ...
-            Round 1!
-            Round 2!
-            This is round two.
-            Round 3!
-        
-        See the [Blinker documentation](https://pythonhosted.org/blinker/) for more information.
-        
-        ## Requirements
-        
-        Blinker requires Python 2.4 or higher, Python 3.0 or higher, or Jython 2.5 or higher.
-        
-        ## Changelog Summary
-        
-        1.3 (July 3, 2013)
-        
-         - The global signal stash behind blinker.signal() is now backed by a
-           regular name-to-Signal dictionary. Previously, weak references were
-           held in the mapping and ephemeral usage in code like
-           ``signal('foo').connect(...)`` could have surprising program behavior
-           depending on import order of modules.
-         - blinker.Namespace is now built on a regular dict. Use
-           blinker.WeakNamespace for the older, weak-referencing behavior.
-         - Signal.connect('text-sender') uses an alternate hashing strategy to
-           avoid sharp edges in text identity.
-        
-        1.2 (October 26, 2011)
-        
-         - Added Signal.receiver_connected and Signal.receiver_disconnected
-           per-Signal signals.
-         - Deprecated the global 'receiver_connected' signal.
-         - Verified Python 3.2 support (no changes needed!)
-        
-        1.1 (July 21, 2010)
-        
-         - Added ``@signal.connect_via(sender)`` decorator
-         - Added ``signal.connected_to`` shorthand name for the
-           ``temporarily_connected_to`` context manager.
-        
-        1.0 (March 28, 2010)
-        
-         - Python 3.x compatibility
-        
-        0.9 (February 26, 2010)
-        
-         - Sphinx docs, project website
-         - Added ``with a_signal.temporarily_connected_to(receiver): ...`` support
-        
-Keywords: signal emit events broadcast
-Platform: UNKNOWN
-Classifier: Development Status :: 5 - Production/Stable
-Classifier: Intended Audience :: Developers
-Classifier: License :: OSI Approved :: MIT License
-Classifier: Operating System :: OS Independent
-Classifier: Programming Language :: Python
-Classifier: Programming Language :: Python :: 2
-Classifier: Programming Language :: Python :: 2.4
-Classifier: Programming Language :: Python :: 2.5
-Classifier: Programming Language :: Python :: 2.6
-Classifier: Programming Language :: Python :: 2.7
-Classifier: Programming Language :: Python :: 3
-Classifier: Programming Language :: Python :: 3.0
-Classifier: Programming Language :: Python :: 3.1
-Classifier: Programming Language :: Python :: 3.2
-Classifier: Programming Language :: Python :: 3.3
-Classifier: Programming Language :: Python :: 3.4
-Classifier: Topic :: Software Development :: Libraries
-Classifier: Topic :: Utilities

backend/venv/lib/python3.6/site-packages/blinker-1.4.egg-info/SOURCES.txt

@@ -1,49 +0,0 @@
-AUTHORS
-CHANGES
-LICENSE
-MANIFEST.in
-README.md
-setup.cfg
-setup.py
-blinker/__init__.py
-blinker/_saferef.py
-blinker/_utilities.py
-blinker/base.py
-blinker.egg-info/PKG-INFO
-blinker.egg-info/SOURCES.txt
-blinker.egg-info/dependency_links.txt
-blinker.egg-info/top_level.txt
-docs/html/genindex.html
-docs/html/index.html
-docs/html/objects.inv
-docs/html/search.html
-docs/html/searchindex.js
-docs/html/_sources/index.txt
-docs/html/_static/basic.css
-docs/html/_static/blinker-named.png
-docs/html/_static/blinker64.png
-docs/html/_static/comment-bright.png
-docs/html/_static/comment-close.png
-docs/html/_static/comment.png
-docs/html/_static/doctools.js
-docs/html/_static/down-pressed.png
-docs/html/_static/down.png
-docs/html/_static/file.png
-docs/html/_static/flasky.css
-docs/html/_static/jquery.js
-docs/html/_static/minus.png
-docs/html/_static/plus.png
-docs/html/_static/pygments.css
-docs/html/_static/searchtools.js
-docs/html/_static/underscore.js
-docs/html/_static/up-pressed.png
-docs/html/_static/up.png
-docs/html/_static/websupport.js
-docs/source/conf.py
-docs/source/index.rst
-docs/source/_themes/flask_theme_support.py
-docs/text/index.txt
-tests/test_context.py
-tests/test_saferef.py
-tests/test_signals.py
-tests/test_utilities.py

backend/venv/lib/python3.6/site-packages/blinker-1.4.egg-info/dependency_links.txt

@@ -1 +0,0 @@
-

backend/venv/lib/python3.6/site-packages/blinker-1.4.egg-info/installed-files.txt

@@ -1,12 +0,0 @@
-../blinker/__init__.py
-../blinker/__pycache__/__init__.cpython-36.pyc
-../blinker/__pycache__/_saferef.cpython-36.pyc
-../blinker/__pycache__/_utilities.cpython-36.pyc
-../blinker/__pycache__/base.cpython-36.pyc
-../blinker/_saferef.py
-../blinker/_utilities.py
-../blinker/base.py
-PKG-INFO
-SOURCES.txt
-dependency_links.txt
-top_level.txt

backend/venv/lib/python3.6/site-packages/blinker-1.4.egg-info/top_level.txt

@@ -1 +0,0 @@
-blinker

backend/venv/lib/python3.6/site-packages/blinker/__init__.py

@@ -1,22 +0,0 @@
-from blinker.base import (
-    ANY,
-    NamedSignal,
-    Namespace,
-    Signal,
-    WeakNamespace,
-    receiver_connected,
-    signal,
-)
-
-__all__ = [
-    'ANY',
-    'NamedSignal',
-    'Namespace',
-    'Signal',
-    'WeakNamespace',
-    'receiver_connected',
-    'signal',
-    ]
-
-
-__version__ = '1.4'

backend/venv/lib/python3.6/site-packages/blinker/_saferef.py

@@ -1,234 +0,0 @@
-# extracted from Louie, http://pylouie.org/
-# updated for Python 3
-#
-# Copyright (c) 2006 Patrick K. O'Brien, Mike C. Fletcher,
-#                    Matthew R. Scott
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-#       notice, this list of conditions and the following disclaimer.
-#
-#     * Redistributions in binary form must reproduce the above
-#       copyright notice, this list of conditions and the following
-#       disclaimer in the documentation and/or other materials provided
-#       with the distribution.
-#
-#     * Neither the name of the <ORGANIZATION> nor the names of its
-#       contributors may be used to endorse or promote products derived
-#       from this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-#
-"""Refactored 'safe reference from dispatcher.py"""
-
-import operator
-import sys
-import traceback
-import weakref
-
-
-try:
-    callable
-except NameError:
-    def callable(object):
-        return hasattr(object, '__call__')
-
-
-if sys.version_info < (3,):
-    get_self = operator.attrgetter('im_self')
-    get_func = operator.attrgetter('im_func')
-else:
-    get_self = operator.attrgetter('__self__')
-    get_func = operator.attrgetter('__func__')
-
-
-def safe_ref(target, on_delete=None):
-    """Return a *safe* weak reference to a callable target.
-
-    - ``target``: The object to be weakly referenced, if it's a bound
-      method reference, will create a BoundMethodWeakref, otherwise
-      creates a simple weakref.
-
-    - ``on_delete``: If provided, will have a hard reference stored to
-      the callable to be called after the safe reference goes out of
-      scope with the reference object, (either a weakref or a
-      BoundMethodWeakref) as argument.
-    """
-    try:
-        im_self = get_self(target)
-    except AttributeError:
-        if callable(on_delete):
-            return weakref.ref(target, on_delete)
-        else:
-            return weakref.ref(target)
-    else:
-        if im_self is not None:
-            # Turn a bound method into a BoundMethodWeakref instance.
-            # Keep track of these instances for lookup by disconnect().
-            assert hasattr(target, 'im_func') or hasattr(target, '__func__'), (
-                "safe_ref target %r has im_self, but no im_func, "
-                "don't know how to create reference" % target)
-            reference = BoundMethodWeakref(target=target, on_delete=on_delete)
-            return reference
-
-
-class BoundMethodWeakref(object):
-    """'Safe' and reusable weak references to instance methods.
-
-    BoundMethodWeakref objects provide a mechanism for referencing a
-    bound method without requiring that the method object itself
-    (which is normally a transient object) is kept alive.  Instead,
-    the BoundMethodWeakref object keeps weak references to both the
-    object and the function which together define the instance method.
-
-    Attributes:
-
-    - ``key``: The identity key for the reference, calculated by the
-      class's calculate_key method applied to the target instance method.
-
-    - ``deletion_methods``: Sequence of callable objects taking single
-      argument, a reference to this object which will be called when
-      *either* the target object or target function is garbage
-      collected (i.e. when this object becomes invalid).  These are
-      specified as the on_delete parameters of safe_ref calls.
-
-    - ``weak_self``: Weak reference to the target object.
-
-    - ``weak_func``: Weak reference to the target function.
-
-    Class Attributes:
-
-    - ``_all_instances``: Class attribute pointing to all live
-      BoundMethodWeakref objects indexed by the class's
-      calculate_key(target) method applied to the target objects.
-      This weak value dictionary is used to short-circuit creation so
-      that multiple references to the same (object, function) pair
-      produce the same BoundMethodWeakref instance.
-    """
-
-    _all_instances = weakref.WeakValueDictionary()
-
-    def __new__(cls, target, on_delete=None, *arguments, **named):
-        """Create new instance or return current instance.
-
-        Basically this method of construction allows us to
-        short-circuit creation of references to already- referenced
-        instance methods.  The key corresponding to the target is
-        calculated, and if there is already an existing reference,
-        that is returned, with its deletion_methods attribute updated.
-        Otherwise the new instance is created and registered in the
-        table of already-referenced methods.
-        """
-        key = cls.calculate_key(target)
-        current = cls._all_instances.get(key)
-        if current is not None:
-            current.deletion_methods.append(on_delete)
-            return current
-        else:
-            base = super(BoundMethodWeakref, cls).__new__(cls)
-            cls._all_instances[key] = base
-            base.__init__(target, on_delete, *arguments, **named)
-            return base
-
-    def __init__(self, target, on_delete=None):
-        """Return a weak-reference-like instance for a bound method.
-
-        - ``target``: The instance-method target for the weak reference,
-          must have im_self and im_func attributes and be
-          reconstructable via the following, which is true of built-in
-          instance methods::
-
-            target.im_func.__get__( target.im_self )
-
-        - ``on_delete``: Optional callback which will be called when
-          this weak reference ceases to be valid (i.e. either the
-          object or the function is garbage collected).  Should take a
-          single argument, which will be passed a pointer to this
-          object.
-        """
-        def remove(weak, self=self):
-            """Set self.isDead to True when method or instance is destroyed."""
-            methods = self.deletion_methods[:]
-            del self.deletion_methods[:]
-            try:
-                del self.__class__._all_instances[self.key]
-            except KeyError:
-                pass
-            for function in methods:
-                try:
-                    if callable(function):
-                        function(self)
-                except Exception:
-                    try:
-                        traceback.print_exc()
-                    except AttributeError:
-                        e = sys.exc_info()[1]
-                        print ('Exception during saferef %s '
-                               'cleanup function %s: %s' % (self, function, e))
-        self.deletion_methods = [on_delete]
-        self.key = self.calculate_key(target)
-        im_self = get_self(target)
-        im_func = get_func(target)
-        self.weak_self = weakref.ref(im_self, remove)
-        self.weak_func = weakref.ref(im_func, remove)
-        self.self_name = str(im_self)
-        self.func_name = str(im_func.__name__)
-
-    def calculate_key(cls, target):
-        """Calculate the reference key for this reference.
-
-        Currently this is a two-tuple of the id()'s of the target
-        object and the target function respectively.
-        """
-        return (id(get_self(target)), id(get_func(target)))
-    calculate_key = classmethod(calculate_key)
-
-    def __str__(self):
-        """Give a friendly representation of the object."""
-        return "%s(%s.%s)" % (
-            self.__class__.__name__,
-            self.self_name,
-            self.func_name,
-            )
-
-    __repr__ = __str__
-
-    def __nonzero__(self):
-        """Whether we are still a valid reference."""
-        return self() is not None
-
-    def __cmp__(self, other):
-        """Compare with another reference."""
-        if not isinstance(other, self.__class__):
-            return cmp(self.__class__, type(other))
-        return cmp(self.key, other.key)
-
-    def __call__(self):
-        """Return a strong reference to the bound method.
-
-        If the target cannot be retrieved, then will return None,
-        otherwise returns a bound instance method for our object and
-        function.
-
-        Note: You may call this method any number of times, as it does
-        not invalidate the reference.
-        """
-        target = self.weak_self()
-        if target is not None:
-            function = self.weak_func()
-            if function is not None:
-                return function.__get__(target)
-        return None

backend/venv/lib/python3.6/site-packages/blinker/_utilities.py

@@ -1,163 +0,0 @@
-from weakref import ref
-
-from blinker._saferef import BoundMethodWeakref
-
-
-try:
-    callable
-except NameError:
-    def callable(object):
-        return hasattr(object, '__call__')
-
-
-try:
-    from collections import defaultdict
-except:
-    class defaultdict(dict):
-
-        def __init__(self, default_factory=None, *a, **kw):
-            if (default_factory is not None and
-                not hasattr(default_factory, '__call__')):
-                raise TypeError('first argument must be callable')
-            dict.__init__(self, *a, **kw)
-            self.default_factory = default_factory
-
-        def __getitem__(self, key):
-            try:
-                return dict.__getitem__(self, key)
-            except KeyError:
-                return self.__missing__(key)
-
-        def __missing__(self, key):
-            if self.default_factory is None:
-                raise KeyError(key)
-            self[key] = value = self.default_factory()
-            return value
-
-        def __reduce__(self):
-            if self.default_factory is None:
-                args = tuple()
-            else:
-                args = self.default_factory,
-            return type(self), args, None, None, self.items()
-
-        def copy(self):
-            return self.__copy__()
-
-        def __copy__(self):
-            return type(self)(self.default_factory, self)
-
-        def __deepcopy__(self, memo):
-            import copy
-            return type(self)(self.default_factory,
-                              copy.deepcopy(self.items()))
-
-        def __repr__(self):
-            return 'defaultdict(%s, %s)' % (self.default_factory,
-                                            dict.__repr__(self))
-
-
-try:
-    from contextlib import contextmanager
-except ImportError:
-    def contextmanager(fn):
-        def oops(*args, **kw):
-            raise RuntimeError("Python 2.5 or above is required to use "
-                               "context managers.")
-        oops.__name__ = fn.__name__
-        return oops
-
-class _symbol(object):
-
-    def __init__(self, name):
-        """Construct a new named symbol."""
-        self.__name__ = self.name = name
-
-    def __reduce__(self):
-        return symbol, (self.name,)
-
-    def __repr__(self):
-        return self.name
-_symbol.__name__ = 'symbol'
-
-
-class symbol(object):
-    """A constant symbol.
-
-    >>> symbol('foo') is symbol('foo')
-    True
-    >>> symbol('foo')
-    foo
-
-    A slight refinement of the MAGICCOOKIE=object() pattern.  The primary
-    advantage of symbol() is its repr().  They are also singletons.
-
-    Repeated calls of symbol('name') will all return the same instance.
-
-    """
-    symbols = {}
-
-    def __new__(cls, name):
-        try:
-            return cls.symbols[name]
-        except KeyError:
-            return cls.symbols.setdefault(name, _symbol(name))
-
-
-try:
-    text = (str, unicode)
-except NameError:
-    text = str
-
-
-def hashable_identity(obj):
-    if hasattr(obj, '__func__'):
-        return (id(obj.__func__), id(obj.__self__))
-    elif hasattr(obj, 'im_func'):
-        return (id(obj.im_func), id(obj.im_self))
-    elif isinstance(obj, text):
-        return obj
-    else:
-        return id(obj)
-
-
-WeakTypes = (ref, BoundMethodWeakref)
-
-
-class annotatable_weakref(ref):
-    """A weakref.ref that supports custom instance attributes."""
-
-
-def reference(object, callback=None, **annotations):
-    """Return an annotated weak ref."""
-    if callable(object):
-        weak = callable_reference(object, callback)
-    else:
-        weak = annotatable_weakref(object, callback)
-    for key, value in annotations.items():
-        setattr(weak, key, value)
-    return weak
-
-
-def callable_reference(object, callback=None):
-    """Return an annotated weak ref, supporting bound instance methods."""
-    if hasattr(object, 'im_self') and object.im_self is not None:
-        return BoundMethodWeakref(target=object, on_delete=callback)
-    elif hasattr(object, '__self__') and object.__self__ is not None:
-        return BoundMethodWeakref(target=object, on_delete=callback)
-    return annotatable_weakref(object, callback)
-
-
-class lazy_property(object):
-    """A @property that is only evaluated once."""
-
-    def __init__(self, deferred):
-        self._deferred = deferred
-        self.__doc__ = deferred.__doc__
-
-    def __get__(self, obj, cls):
-        if obj is None:
-            return self
-        value = self._deferred(obj)
-        setattr(obj, self._deferred.__name__, value)
-        return value

backend/venv/lib/python3.6/site-packages/blinker/base.py

@@ -1,455 +0,0 @@
-# -*- coding: utf-8; fill-column: 76 -*-
-"""Signals and events.
-
-A small implementation of signals, inspired by a snippet of Django signal
-API client code seen in a blog post.  Signals are first-class objects and
-each manages its own receivers and message emission.
-
-The :func:`signal` function provides singleton behavior for named signals.
-
-"""
-from warnings import warn
-from weakref import WeakValueDictionary
-
-from blinker._utilities import (
-    WeakTypes,
-    contextmanager,
-    defaultdict,
-    hashable_identity,
-    lazy_property,
-    reference,
-    symbol,
-    )
-
-
-ANY = symbol('ANY')
-ANY.__doc__ = 'Token for "any sender".'
-ANY_ID = 0
-
-
-class Signal(object):
-    """A notification emitter."""
-
-    #: An :obj:`ANY` convenience synonym, allows ``Signal.ANY``
-    #: without an additional import.
-    ANY = ANY
-
-    @lazy_property
-    def receiver_connected(self):
-        """Emitted after each :meth:`connect`.
-
-        The signal sender is the signal instance, and the :meth:`connect`
-        arguments are passed through: *receiver*, *sender*, and *weak*.
-
-        .. versionadded:: 1.2
-
-        """
-        return Signal(doc="Emitted after a receiver connects.")
-
-    @lazy_property
-    def receiver_disconnected(self):
-        """Emitted after :meth:`disconnect`.
-
-        The sender is the signal instance, and the :meth:`disconnect` arguments
-        are passed through: *receiver* and *sender*.
-
-        Note, this signal is emitted **only** when :meth:`disconnect` is
-        called explicitly.
-
-        The disconnect signal can not be emitted by an automatic disconnect
-        (due to a weakly referenced receiver or sender going out of scope),
-        as the receiver and/or sender instances are no longer available for
-        use at the time this signal would be emitted.
-
-        An alternative approach is available by subscribing to
-        :attr:`receiver_connected` and setting up a custom weakref cleanup
-        callback on weak receivers and senders.
-
-        .. versionadded:: 1.2
-
-        """
-        return Signal(doc="Emitted after a receiver disconnects.")
-
-    def __init__(self, doc=None):
-        """
-        :param doc: optional.  If provided, will be assigned to the signal's
-          __doc__ attribute.
-
-        """
-        if doc:
-            self.__doc__ = doc
-        #: A mapping of connected receivers.
-        #:
-        #: The values of this mapping are not meaningful outside of the
-        #: internal :class:`Signal` implementation, however the boolean value
-        #: of the mapping is useful as an extremely efficient check to see if
-        #: any receivers are connected to the signal.
-        self.receivers = {}
-        self._by_receiver = defaultdict(set)
-        self._by_sender = defaultdict(set)
-        self._weak_senders = {}
-
-    def connect(self, receiver, sender=ANY, weak=True):
-        """Connect *receiver* to signal events sent by *sender*.
-
-        :param receiver: A callable.  Will be invoked by :meth:`send` with
-          `sender=` as a single positional argument and any \*\*kwargs that
-          were provided to a call to :meth:`send`.
-
-        :param sender: Any object or :obj:`ANY`, defaults to ``ANY``.
-          Restricts notifications delivered to *receiver* to only those
-          :meth:`send` emissions sent by *sender*.  If ``ANY``, the receiver
-          will always be notified.  A *receiver* may be connected to
-          multiple *sender* values on the same Signal through multiple calls
-          to :meth:`connect`.
-
-        :param weak: If true, the Signal will hold a weakref to *receiver*
-          and automatically disconnect when *receiver* goes out of scope or
-          is garbage collected.  Defaults to True.
-
-        """
-        receiver_id = hashable_identity(receiver)
-        if weak:
-            receiver_ref = reference(receiver, self._cleanup_receiver)
-            receiver_ref.receiver_id = receiver_id
-        else:
-            receiver_ref = receiver
-        if sender is ANY:
-            sender_id = ANY_ID
-        else:
-            sender_id = hashable_identity(sender)
-
-        self.receivers.setdefault(receiver_id, receiver_ref)
-        self._by_sender[sender_id].add(receiver_id)
-        self._by_receiver[receiver_id].add(sender_id)
-        del receiver_ref
-
-        if sender is not ANY and sender_id not in self._weak_senders:
-            # wire together a cleanup for weakref-able senders
-            try:
-                sender_ref = reference(sender, self._cleanup_sender)
-                sender_ref.sender_id = sender_id
-            except TypeError:
-                pass
-            else:
-                self._weak_senders.setdefault(sender_id, sender_ref)
-                del sender_ref
-
-        # broadcast this connection.  if receivers raise, disconnect.
-        if ('receiver_connected' in self.__dict__ and
-            self.receiver_connected.receivers):
-            try:
-                self.receiver_connected.send(self,
-                                             receiver=receiver,
-                                             sender=sender,
-                                             weak=weak)
-            except:
-                self.disconnect(receiver, sender)
-                raise
-        if receiver_connected.receivers and self is not receiver_connected:
-            try:
-                receiver_connected.send(self,
-                                        receiver_arg=receiver,
-                                        sender_arg=sender,
-                                        weak_arg=weak)
-            except:
-                self.disconnect(receiver, sender)
-                raise
-        return receiver
-
-    def connect_via(self, sender, weak=False):
-        """Connect the decorated function as a receiver for *sender*.
-
-        :param sender: Any object or :obj:`ANY`.  The decorated function
-          will only receive :meth:`send` emissions sent by *sender*.  If
-          ``ANY``, the receiver will always be notified.  A function may be
-          decorated multiple times with differing *sender* values.
-
-        :param weak: If true, the Signal will hold a weakref to the
-          decorated function and automatically disconnect when *receiver*
-          goes out of scope or is garbage collected.  Unlike
-          :meth:`connect`, this defaults to False.
-
-        The decorated function will be invoked by :meth:`send` with
-          `sender=` as a single positional argument and any \*\*kwargs that
-          were provided to the call to :meth:`send`.
-
-
-        .. versionadded:: 1.1
-
-        """
-        def decorator(fn):
-            self.connect(fn, sender, weak)
-            return fn
-        return decorator
-
-    @contextmanager
-    def connected_to(self, receiver, sender=ANY):
-        """Execute a block with the signal temporarily connected to *receiver*.
-
-        :param receiver: a receiver callable
-        :param sender: optional, a sender to filter on
-
-        This is a context manager for use in the ``with`` statement.  It can
-        be useful in unit tests.  *receiver* is connected to the signal for
-        the duration of the ``with`` block, and will be disconnected
-        automatically when exiting the block:
-
-        .. testsetup::
-
-          from __future__ import with_statement
-          from blinker import Signal
-          on_ready = Signal()
-          receiver = lambda sender: None
-
-        .. testcode::
-
-          with on_ready.connected_to(receiver):
-             # do stuff
-             on_ready.send(123)
-
-        .. versionadded:: 1.1
-
-        """
-        self.connect(receiver, sender=sender, weak=False)
-        try:
-            yield None
-        except:
-            self.disconnect(receiver)
-            raise
-        else:
-            self.disconnect(receiver)
-
-    def temporarily_connected_to(self, receiver, sender=ANY):
-        """An alias for :meth:`connected_to`.
-
-        :param receiver: a receiver callable
-        :param sender: optional, a sender to filter on
-
-        .. versionadded:: 0.9
-
-        .. versionchanged:: 1.1
-          Renamed to :meth:`connected_to`.  ``temporarily_connected_to`` was
-          deprecated in 1.2 and will be removed in a subsequent version.
-
-        """
-        warn("temporarily_connected_to is deprecated; "
-             "use connected_to instead.",
-             DeprecationWarning)
-        return self.connected_to(receiver, sender)
-
-    def send(self, *sender, **kwargs):
-        """Emit this signal on behalf of *sender*, passing on \*\*kwargs.
-
-        Returns a list of 2-tuples, pairing receivers with their return
-        value. The ordering of receiver notification is undefined.
-
-        :param \*sender: Any object or ``None``.  If omitted, synonymous
-          with ``None``.  Only accepts one positional argument.
-
-        :param \*\*kwargs: Data to be sent to receivers.
-
-        """
-        # Using '*sender' rather than 'sender=None' allows 'sender' to be
-        # used as a keyword argument- i.e. it's an invisible name in the
-        # function signature.
-        if len(sender) == 0:
-            sender = None
-        elif len(sender) > 1:
-            raise TypeError('send() accepts only one positional argument, '
-                            '%s given' % len(sender))
-        else:
-            sender = sender[0]
-        if not self.receivers:
-            return []
-        else:
-            return [(receiver, receiver(sender, **kwargs))
-                    for receiver in self.receivers_for(sender)]
-
-    def has_receivers_for(self, sender):
-        """True if there is probably a receiver for *sender*.
-
-        Performs an optimistic check only.  Does not guarantee that all
-        weakly referenced receivers are still alive.  See
-        :meth:`receivers_for` for a stronger search.
-
-        """
-        if not self.receivers:
-            return False
-        if self._by_sender[ANY_ID]:
-            return True
-        if sender is ANY:
-            return False
-        return hashable_identity(sender) in self._by_sender
-
-    def receivers_for(self, sender):
-        """Iterate all live receivers listening for *sender*."""
-        # TODO: test receivers_for(ANY)
-        if self.receivers:
-            sender_id = hashable_identity(sender)
-            if sender_id in self._by_sender:
-                ids = (self._by_sender[ANY_ID] |
-                       self._by_sender[sender_id])
-            else:
-                ids = self._by_sender[ANY_ID].copy()
-            for receiver_id in ids:
-                receiver = self.receivers.get(receiver_id)
-                if receiver is None:
-                    continue
-                if isinstance(receiver, WeakTypes):
-                    strong = receiver()
-                    if strong is None:
-                        self._disconnect(receiver_id, ANY_ID)
-                        continue
-                    receiver = strong
-                yield receiver
-
-    def disconnect(self, receiver, sender=ANY):
-        """Disconnect *receiver* from this signal's events.
-
-        :param receiver: a previously :meth:`connected<connect>` callable
-
-        :param sender: a specific sender to disconnect from, or :obj:`ANY`
-          to disconnect from all senders.  Defaults to ``ANY``.
-
-        """
-        if sender is ANY:
-            sender_id = ANY_ID
-        else:
-            sender_id = hashable_identity(sender)
-        receiver_id = hashable_identity(receiver)
-        self._disconnect(receiver_id, sender_id)
-
-        if ('receiver_disconnected' in self.__dict__ and
-            self.receiver_disconnected.receivers):
-            self.receiver_disconnected.send(self,
-                                            receiver=receiver,
-                                            sender=sender)
-
-    def _disconnect(self, receiver_id, sender_id):
-        if sender_id == ANY_ID:
-            if self._by_receiver.pop(receiver_id, False):
-                for bucket in self._by_sender.values():
-                    bucket.discard(receiver_id)
-            self.receivers.pop(receiver_id, None)
-        else:
-            self._by_sender[sender_id].discard(receiver_id)
-            self._by_receiver[receiver_id].discard(sender_id)
-
-    def _cleanup_receiver(self, receiver_ref):
-        """Disconnect a receiver from all senders."""
-        self._disconnect(receiver_ref.receiver_id, ANY_ID)
-
-    def _cleanup_sender(self, sender_ref):
-        """Disconnect all receivers from a sender."""
-        sender_id = sender_ref.sender_id
-        assert sender_id != ANY_ID
-        self._weak_senders.pop(sender_id, None)
-        for receiver_id in self._by_sender.pop(sender_id, ()):
-            self._by_receiver[receiver_id].discard(sender_id)
-
-    def _cleanup_bookkeeping(self):
-        """Prune unused sender/receiver bookeeping. Not threadsafe.
-
-        Connecting & disconnecting leave behind a small amount of bookeeping
-        for the receiver and sender values. Typical workloads using Blinker,
-        for example in most web apps, Flask, CLI scripts, etc., are not
-        adversely affected by this bookkeeping.
-
-        With a long-running Python process performing dynamic signal routing
-        with high volume- e.g. connecting to function closures, "senders" are
-        all unique object instances, and doing all of this over and over- you
-        may see memory usage will grow due to extraneous bookeeping. (An empty
-        set() for each stale sender/receiver pair.)
-
-        This method will prune that bookeeping away, with the caveat that such
-        pruning is not threadsafe. The risk is that cleanup of a fully
-        disconnected receiver/sender pair occurs while another thread is
-        connecting that same pair. If you are in the highly dynamic, unique
-        receiver/sender situation that has lead you to this method, that
-        failure mode is perhaps not a big deal for you.
-        """
-        for mapping in (self._by_sender, self._by_receiver):
-            for _id, bucket in list(mapping.items()):
-                if not bucket:
-                    mapping.pop(_id, None)
-
-    def _clear_state(self):
-        """Throw away all signal state.  Useful for unit tests."""
-        self._weak_senders.clear()
-        self.receivers.clear()
-        self._by_sender.clear()
-        self._by_receiver.clear()
-
-
-receiver_connected = Signal("""\
-Sent by a :class:`Signal` after a receiver connects.
-
-:argument: the Signal that was connected to
-:keyword receiver_arg: the connected receiver
-:keyword sender_arg: the sender to connect to
-:keyword weak_arg: true if the connection to receiver_arg is a weak reference
-
-.. deprecated:: 1.2
-
-As of 1.2, individual signals have their own private
-:attr:`~Signal.receiver_connected` and
-:attr:`~Signal.receiver_disconnected` signals with a slightly simplified
-call signature.  This global signal is planned to be removed in 1.6.
-
-""")
-
-
-class NamedSignal(Signal):
-    """A named generic notification emitter."""
-
-    def __init__(self, name, doc=None):
-        Signal.__init__(self, doc)
-
-        #: The name of this signal.
-        self.name = name
-
-    def __repr__(self):
-        base = Signal.__repr__(self)
-        return "%s; %r>" % (base[:-1], self.name)
-
-
-class Namespace(dict):
-    """A mapping of signal names to signals."""
-
-    def signal(self, name, doc=None):
-        """Return the :class:`NamedSignal` *name*, creating it if required.
-
-        Repeated calls to this function will return the same signal object.
-
-        """
-        try:
-            return self[name]
-        except KeyError:
-            return self.setdefault(name, NamedSignal(name, doc))
-
-
-class WeakNamespace(WeakValueDictionary):
-    """A weak mapping of signal names to signals.
-
-    Automatically cleans up unused Signals when the last reference goes out
-    of scope.  This namespace implementation exists for a measure of legacy
-    compatibility with Blinker <= 1.2, and may be dropped in the future.
-
-    .. versionadded:: 1.3
-
-    """
-
-    def signal(self, name, doc=None):
-        """Return the :class:`NamedSignal` *name*, creating it if required.
-
-        Repeated calls to this function will return the same signal object.
-
-        """
-        try:
-            return self[name]
-        except KeyError:
-            return self.setdefault(name, NamedSignal(name, doc))
-
-
-signal = Namespace().signal

backend/venv/lib/python3.6/site-packages/click/__init__.py

@@ -1,97 +0,0 @@
-# -*- coding: utf-8 -*-
-"""
-click
-~~~~~
-
-Click is a simple Python module inspired by the stdlib optparse to make
-writing command line scripts fun. Unlike other modules, it's based
-around a simple API that does not come with too much magic and is
-composable.
-
-:copyright: © 2014 by the Pallets team.
-:license: BSD, see LICENSE.rst for more details.
-"""
-
-# Core classes
-from .core import Context, BaseCommand, Command, MultiCommand, Group, \
-     CommandCollection, Parameter, Option, Argument
-
-# Globals
-from .globals import get_current_context
-
-# Decorators
-from .decorators import pass_context, pass_obj, make_pass_decorator, \
-     command, group, argument, option, confirmation_option, \
-     password_option, version_option, help_option
-
-# Types
-from .types import ParamType, File, Path, Choice, IntRange, Tuple, \
-     DateTime, STRING, INT, FLOAT, BOOL, UUID, UNPROCESSED, FloatRange
-
-# Utilities
-from .utils import echo, get_binary_stream, get_text_stream, open_file, \
-     format_filename, get_app_dir, get_os_args
-
-# Terminal functions
-from .termui import prompt, confirm, get_terminal_size, echo_via_pager, \
-     progressbar, clear, style, unstyle, secho, edit, launch, getchar, \
-     pause
-
-# Exceptions
-from .exceptions import ClickException, UsageError, BadParameter, \
-     FileError, Abort, NoSuchOption, BadOptionUsage, BadArgumentUsage, \
-     MissingParameter
-
-# Formatting
-from .formatting import HelpFormatter, wrap_text
-
-# Parsing
-from .parser import OptionParser
-
-
-__all__ = [
-    # Core classes
-    'Context', 'BaseCommand', 'Command', 'MultiCommand', 'Group',
-    'CommandCollection', 'Parameter', 'Option', 'Argument',
-
-    # Globals
-    'get_current_context',
-
-    # Decorators
-    'pass_context', 'pass_obj', 'make_pass_decorator', 'command', 'group',
-    'argument', 'option', 'confirmation_option', 'password_option',
-    'version_option', 'help_option',
-
-    # Types
-    'ParamType', 'File', 'Path', 'Choice', 'IntRange', 'Tuple',
-    'DateTime', 'STRING', 'INT', 'FLOAT', 'BOOL', 'UUID', 'UNPROCESSED',
-    'FloatRange',
-
-    # Utilities
-    'echo', 'get_binary_stream', 'get_text_stream', 'open_file',
-    'format_filename', 'get_app_dir', 'get_os_args',
-
-    # Terminal functions
-    'prompt', 'confirm', 'get_terminal_size', 'echo_via_pager',
-    'progressbar', 'clear', 'style', 'unstyle', 'secho', 'edit', 'launch',
-    'getchar', 'pause',
-
-    # Exceptions
-    'ClickException', 'UsageError', 'BadParameter', 'FileError',
-    'Abort', 'NoSuchOption', 'BadOptionUsage', 'BadArgumentUsage',
-    'MissingParameter',
-
-    # Formatting
-    'HelpFormatter', 'wrap_text',
-
-    # Parsing
-    'OptionParser',
-]
-
-
-# Controls if click should emit the warning about the use of unicode
-# literals.
-disable_unicode_literals_warning = False
-
-
-__version__ = '7.0'

backend/venv/lib/python3.6/site-packages/click/_bashcomplete.py

@@ -1,293 +0,0 @@
-import copy
-import os
-import re
-
-from .utils import echo
-from .parser import split_arg_string
-from .core import MultiCommand, Option, Argument
-from .types import Choice
-
-try:
-    from collections import abc
-except ImportError:
-    import collections as abc
-
-WORDBREAK = '='
-
-# Note, only BASH version 4.4 and later have the nosort option.
-COMPLETION_SCRIPT_BASH = '''
-%(complete_func)s() {
-    local IFS=$'\n'
-    COMPREPLY=( $( env COMP_WORDS="${COMP_WORDS[*]}" \\
-                   COMP_CWORD=$COMP_CWORD \\
-                   %(autocomplete_var)s=complete $1 ) )
-    return 0
-}
-
-%(complete_func)setup() {
-    local COMPLETION_OPTIONS=""
-    local BASH_VERSION_ARR=(${BASH_VERSION//./ })
-    # Only BASH version 4.4 and later have the nosort option.
-    if [ ${BASH_VERSION_ARR[0]} -gt 4 ] || ([ ${BASH_VERSION_ARR[0]} -eq 4 ] && [ ${BASH_VERSION_ARR[1]} -ge 4 ]); then
-        COMPLETION_OPTIONS="-o nosort"
-    fi
-
-    complete $COMPLETION_OPTIONS -F %(complete_func)s %(script_names)s
-}
-
-%(complete_func)setup
-'''
-
-COMPLETION_SCRIPT_ZSH = '''
-%(complete_func)s() {
-    local -a completions
-    local -a completions_with_descriptions
-    local -a response
-    response=("${(@f)$( env COMP_WORDS=\"${words[*]}\" \\
-                        COMP_CWORD=$((CURRENT-1)) \\
-                        %(autocomplete_var)s=\"complete_zsh\" \\
-                        %(script_names)s )}")
-
-    for key descr in ${(kv)response}; do
-      if [[ "$descr" == "_" ]]; then
-          completions+=("$key")
-      else
-          completions_with_descriptions+=("$key":"$descr")
-      fi
-    done
-
-    if [ -n "$completions_with_descriptions" ]; then
-        _describe -V unsorted completions_with_descriptions -U -Q
-    fi
-
-    if [ -n "$completions" ]; then
-        compadd -U -V unsorted -Q -a completions
-    fi
-    compstate[insert]="automenu"
-}
-
-compdef %(complete_func)s %(script_names)s
-'''
-
-_invalid_ident_char_re = re.compile(r'[^a-zA-Z0-9_]')
-
-
-def get_completion_script(prog_name, complete_var, shell):
-    cf_name = _invalid_ident_char_re.sub('', prog_name.replace('-', '_'))
-    script = COMPLETION_SCRIPT_ZSH if shell == 'zsh' else COMPLETION_SCRIPT_BASH
-    return (script % {
-        'complete_func': '_%s_completion' % cf_name,
-        'script_names': prog_name,
-        'autocomplete_var': complete_var,
-    }).strip() + ';'
-
-
-def resolve_ctx(cli, prog_name, args):
-    """
-    Parse into a hierarchy of contexts. Contexts are connected through the parent variable.
-    :param cli: command definition
-    :param prog_name: the program that is running
-    :param args: full list of args
-    :return: the final context/command parsed
-    """
-    ctx = cli.make_context(prog_name, args, resilient_parsing=True)
-    args = ctx.protected_args + ctx.args
-    while args:
-        if isinstance(ctx.command, MultiCommand):
-            if not ctx.command.chain:
-                cmd_name, cmd, args = ctx.command.resolve_command(ctx, args)
-                if cmd is None:
-                    return ctx
-                ctx = cmd.make_context(cmd_name, args, parent=ctx,
-                                       resilient_parsing=True)
-                args = ctx.protected_args + ctx.args
-            else:
-                # Walk chained subcommand contexts saving the last one.
-                while args:
-                    cmd_name, cmd, args = ctx.command.resolve_command(ctx, args)
-                    if cmd is None:
-                        return ctx
-                    sub_ctx = cmd.make_context(cmd_name, args, parent=ctx,
-                                               allow_extra_args=True,
-                                               allow_interspersed_args=False,
-                                               resilient_parsing=True)
-                    args = sub_ctx.args
-                ctx = sub_ctx
-                args = sub_ctx.protected_args + sub_ctx.args
-        else:
-            break
-    return ctx
-
-
-def start_of_option(param_str):
-    """
-    :param param_str: param_str to check
-    :return: whether or not this is the start of an option declaration (i.e. starts "-" or "--")
-    """
-    return param_str and param_str[:1] == '-'
-
-
-def is_incomplete_option(all_args, cmd_param):
-    """
-    :param all_args: the full original list of args supplied
-    :param cmd_param: the current command paramter
-    :return: whether or not the last option declaration (i.e. starts "-" or "--") is incomplete and
-    corresponds to this cmd_param. In other words whether this cmd_param option can still accept
-    values
-    """
-    if not isinstance(cmd_param, Option):
-        return False
-    if cmd_param.is_flag:
-        return False
-    last_option = None
-    for index, arg_str in enumerate(reversed([arg for arg in all_args if arg != WORDBREAK])):
-        if index + 1 > cmd_param.nargs:
-            break
-        if start_of_option(arg_str):
-            last_option = arg_str
-
-    return True if last_option and last_option in cmd_param.opts else False
-
-
-def is_incomplete_argument(current_params, cmd_param):
-    """
-    :param current_params: the current params and values for this argument as already entered
-    :param cmd_param: the current command parameter
-    :return: whether or not the last argument is incomplete and corresponds to this cmd_param. In
-    other words whether or not the this cmd_param argument can still accept values
-    """
-    if not isinstance(cmd_param, Argument):
-        return False
-    current_param_values = current_params[cmd_param.name]
-    if current_param_values is None:
-        return True
-    if cmd_param.nargs == -1:
-        return True
-    if isinstance(current_param_values, abc.Iterable) \
-            and cmd_param.nargs > 1 and len(current_param_values) < cmd_param.nargs:
-        return True
-    return False
-
-
-def get_user_autocompletions(ctx, args, incomplete, cmd_param):
-    """
-    :param ctx: context associated with the parsed command
-    :param args: full list of args
-    :param incomplete: the incomplete text to autocomplete
-    :param cmd_param: command definition
-    :return: all the possible user-specified completions for the param
-    """
-    results = []
-    if isinstance(cmd_param.type, Choice):
-        # Choices don't support descriptions.
-        results = [(c, None)
-                   for c in cmd_param.type.choices if str(c).startswith(incomplete)]
-    elif cmd_param.autocompletion is not None:
-        dynamic_completions = cmd_param.autocompletion(ctx=ctx,
-                                                       args=args,
-                                                       incomplete=incomplete)
-        results = [c if isinstance(c, tuple) else (c, None)
-                   for c in dynamic_completions]
-    return results
-
-
-def get_visible_commands_starting_with(ctx, starts_with):
-    """
-    :param ctx: context associated with the parsed command
-    :starts_with: string that visible commands must start with.
-    :return: all visible (not hidden) commands that start with starts_with.
-    """
-    for c in ctx.command.list_commands(ctx):
-        if c.startswith(starts_with):
-            command = ctx.command.get_command(ctx, c)
-            if not command.hidden:
-                yield command
-
-
-def add_subcommand_completions(ctx, incomplete, completions_out):
-    # Add subcommand completions.
-    if isinstance(ctx.command, MultiCommand):
-        completions_out.extend(
-            [(c.name, c.get_short_help_str()) for c in get_visible_commands_starting_with(ctx, incomplete)])
-
-    # Walk up the context list and add any other completion possibilities from chained commands
-    while ctx.parent is not None:
-        ctx = ctx.parent
-        if isinstance(ctx.command, MultiCommand) and ctx.command.chain:
-            remaining_commands = [c for c in get_visible_commands_starting_with(ctx, incomplete)
-                                  if c.name not in ctx.protected_args]
-            completions_out.extend([(c.name, c.get_short_help_str()) for c in remaining_commands])
-
-
-def get_choices(cli, prog_name, args, incomplete):
-    """
-    :param cli: command definition
-    :param prog_name: the program that is running
-    :param args: full list of args
-    :param incomplete: the incomplete text to autocomplete
-    :return: all the possible completions for the incomplete
-    """
-    all_args = copy.deepcopy(args)
-
-    ctx = resolve_ctx(cli, prog_name, args)
-    if ctx is None:
-        return []
-
-    # In newer versions of bash long opts with '='s are partitioned, but it's easier to parse
-    # without the '='
-    if start_of_option(incomplete) and WORDBREAK in incomplete:
-        partition_incomplete = incomplete.partition(WORDBREAK)
-        all_args.append(partition_incomplete[0])
-        incomplete = partition_incomplete[2]
-    elif incomplete == WORDBREAK:
-        incomplete = ''
-
-    completions = []
-    if start_of_option(incomplete):
-        # completions for partial options
-        for param in ctx.command.params:
-            if isinstance(param, Option) and not param.hidden:
-                param_opts = [param_opt for param_opt in param.opts +
-                              param.secondary_opts if param_opt not in all_args or param.multiple]
-                completions.extend([(o, param.help) for o in param_opts if o.startswith(incomplete)])
-        return completions
-    # completion for option values from user supplied values
-    for param in ctx.command.params:
-        if is_incomplete_option(all_args, param):
-            return get_user_autocompletions(ctx, all_args, incomplete, param)
-    # completion for argument values from user supplied values
-    for param in ctx.command.params:
-        if is_incomplete_argument(ctx.params, param):
-            return get_user_autocompletions(ctx, all_args, incomplete, param)
-
-    add_subcommand_completions(ctx, incomplete, completions)
-    # Sort before returning so that proper ordering can be enforced in custom types.
-    return sorted(completions)
-
-
-def do_complete(cli, prog_name, include_descriptions):
-    cwords = split_arg_string(os.environ['COMP_WORDS'])
-    cword = int(os.environ['COMP_CWORD'])
-    args = cwords[1:cword]
-    try:
-        incomplete = cwords[cword]
-    except IndexError:
-        incomplete = ''
-
-    for item in get_choices(cli, prog_name, args, incomplete):
-        echo(item[0])
-        if include_descriptions:
-            # ZSH has trouble dealing with empty array parameters when returned from commands, so use a well defined character '_' to indicate no description is present.
-            echo(item[1] if item[1] else '_')
-
-    return True
-
-
-def bashcomplete(cli, prog_name, complete_var, complete_instr):
-    if complete_instr.startswith('source'):
-        shell = 'zsh' if complete_instr == 'source_zsh' else 'bash'
-        echo(get_completion_script(prog_name, complete_var, shell))
-        return True
-    elif complete_instr == 'complete' or complete_instr == 'complete_zsh':
-        return do_complete(cli, prog_name, complete_instr == 'complete_zsh')
-    return False

backend/venv/lib/python3.6/site-packages/click/_compat.py

@@ -1,703 +0,0 @@
-import re
-import io
-import os
-import sys
-import codecs
-from weakref import WeakKeyDictionary
-
-
-PY2 = sys.version_info[0] == 2
-CYGWIN = sys.platform.startswith('cygwin')
-# Determine local App Engine environment, per Google's own suggestion
-APP_ENGINE = ('APPENGINE_RUNTIME' in os.environ and
-              'Development/' in os.environ['SERVER_SOFTWARE'])
-WIN = sys.platform.startswith('win') and not APP_ENGINE
-DEFAULT_COLUMNS = 80
-
-
-_ansi_re = re.compile(r'\033\[((?:\d|;)*)([a-zA-Z])')
-
-
-def get_filesystem_encoding():
-    return sys.getfilesystemencoding() or sys.getdefaultencoding()
-
-
-def _make_text_stream(stream, encoding, errors,
-                      force_readable=False, force_writable=False):
-    if encoding is None:
-        encoding = get_best_encoding(stream)
-    if errors is None:
-        errors = 'replace'
-    return _NonClosingTextIOWrapper(stream, encoding, errors,
-                                    line_buffering=True,
-                                    force_readable=force_readable,
-                                    force_writable=force_writable)
-
-
-def is_ascii_encoding(encoding):
-    """Checks if a given encoding is ascii."""
-    try:
-        return codecs.lookup(encoding).name == 'ascii'
-    except LookupError:
-        return False
-
-
-def get_best_encoding(stream):
-    """Returns the default stream encoding if not found."""
-    rv = getattr(stream, 'encoding', None) or sys.getdefaultencoding()
-    if is_ascii_encoding(rv):
-        return 'utf-8'
-    return rv
-
-
-class _NonClosingTextIOWrapper(io.TextIOWrapper):
-
-    def __init__(self, stream, encoding, errors,
-                 force_readable=False, force_writable=False, **extra):
-        self._stream = stream = _FixupStream(stream, force_readable,
-                                             force_writable)
-        io.TextIOWrapper.__init__(self, stream, encoding, errors, **extra)
-
-    # The io module is a place where the Python 3 text behavior
-    # was forced upon Python 2, so we need to unbreak
-    # it to look like Python 2.
-    if PY2:
-        def write(self, x):
-            if isinstance(x, str) or is_bytes(x):
-                try:
-                    self.flush()
-                except Exception:
-                    pass
-                return self.buffer.write(str(x))
-            return io.TextIOWrapper.write(self, x)
-
-        def writelines(self, lines):
-            for line in lines:
-                self.write(line)
-
-    def __del__(self):
-        try:
-            self.detach()
-        except Exception:
-            pass
-
-    def isatty(self):
-        # https://bitbucket.org/pypy/pypy/issue/1803
-        return self._stream.isatty()
-
-
-class _FixupStream(object):
-    """The new io interface needs more from streams than streams
-    traditionally implement.  As such, this fix-up code is necessary in
-    some circumstances.
-
-    The forcing of readable and writable flags are there because some tools
-    put badly patched objects on sys (one such offender are certain version
-    of jupyter notebook).
-    """
-
-    def __init__(self, stream, force_readable=False, force_writable=False):
-        self._stream = stream
-        self._force_readable = force_readable
-        self._force_writable = force_writable
-
-    def __getattr__(self, name):
-        return getattr(self._stream, name)
-
-    def read1(self, size):
-        f = getattr(self._stream, 'read1', None)
-        if f is not None:
-            return f(size)
-        # We only dispatch to readline instead of read in Python 2 as we
-        # do not want cause problems with the different implementation
-        # of line buffering.
-        if PY2:
-            return self._stream.readline(size)
-        return self._stream.read(size)
-
-    def readable(self):
-        if self._force_readable:
-            return True
-        x = getattr(self._stream, 'readable', None)
-        if x is not None:
-            return x()
-        try:
-            self._stream.read(0)
-        except Exception:
-            return False
-        return True
-
-    def writable(self):
-        if self._force_writable:
-            return True
-        x = getattr(self._stream, 'writable', None)
-        if x is not None:
-            return x()
-        try:
-            self._stream.write('')
-        except Exception:
-            try:
-                self._stream.write(b'')
-            except Exception:
-                return False
-        return True
-
-    def seekable(self):
-        x = getattr(self._stream, 'seekable', None)
-        if x is not None:
-            return x()
-        try:
-            self._stream.seek(self._stream.tell())
-        except Exception:
-            return False
-        return True
-
-
-if PY2:
-    text_type = unicode
-    bytes = str
-    raw_input = raw_input
-    string_types = (str, unicode)
-    int_types = (int, long)
-    iteritems = lambda x: x.iteritems()
-    range_type = xrange
-
-    def is_bytes(x):
-        return isinstance(x, (buffer, bytearray))
-
-    _identifier_re = re.compile(r'^[a-zA-Z_][a-zA-Z0-9_]*$')
-
-    # For Windows, we need to force stdout/stdin/stderr to binary if it's
-    # fetched for that.  This obviously is not the most correct way to do
-    # it as it changes global state.  Unfortunately, there does not seem to
-    # be a clear better way to do it as just reopening the file in binary
-    # mode does not change anything.
-    #
-    # An option would be to do what Python 3 does and to open the file as
-    # binary only, patch it back to the system, and then use a wrapper
-    # stream that converts newlines.  It's not quite clear what's the
-    # correct option here.
-    #
-    # This code also lives in _winconsole for the fallback to the console
-    # emulation stream.
-    #
-    # There are also Windows environments where the `msvcrt` module is not
-    # available (which is why we use try-catch instead of the WIN variable
-    # here), such as the Google App Engine development server on Windows. In
-    # those cases there is just nothing we can do.
-    def set_binary_mode(f):
-        return f
-
-    try:
-        import msvcrt
-    except ImportError:
-        pass
-    else:
-        def set_binary_mode(f):
-            try:
-                fileno = f.fileno()
-            except Exception:
-                pass
-            else:
-                msvcrt.setmode(fileno, os.O_BINARY)
-            return f
-
-    try:
-        import fcntl
-    except ImportError:
-        pass
-    else:
-        def set_binary_mode(f):
-            try:
-                fileno = f.fileno()
-            except Exception:
-                pass
-            else:
-                flags = fcntl.fcntl(fileno, fcntl.F_GETFL)
-                fcntl.fcntl(fileno, fcntl.F_SETFL, flags & ~os.O_NONBLOCK)
-            return f
-
-    def isidentifier(x):
-        return _identifier_re.search(x) is not None
-
-    def get_binary_stdin():
-        return set_binary_mode(sys.stdin)
-
-    def get_binary_stdout():
-        _wrap_std_stream('stdout')
-        return set_binary_mode(sys.stdout)
-
-    def get_binary_stderr():
-        _wrap_std_stream('stderr')
-        return set_binary_mode(sys.stderr)
-
-    def get_text_stdin(encoding=None, errors=None):
-        rv = _get_windows_console_stream(sys.stdin, encoding, errors)
-        if rv is not None:
-            return rv
-        return _make_text_stream(sys.stdin, encoding, errors,
-                                 force_readable=True)
-
-    def get_text_stdout(encoding=None, errors=None):
-        _wrap_std_stream('stdout')
-        rv = _get_windows_console_stream(sys.stdout, encoding, errors)
-        if rv is not None:
-            return rv
-        return _make_text_stream(sys.stdout, encoding, errors,
-                                 force_writable=True)
-
-    def get_text_stderr(encoding=None, errors=None):
-        _wrap_std_stream('stderr')
-        rv = _get_windows_console_stream(sys.stderr, encoding, errors)
-        if rv is not None:
-            return rv
-        return _make_text_stream(sys.stderr, encoding, errors,
-                                 force_writable=True)
-
-    def filename_to_ui(value):
-        if isinstance(value, bytes):
-            value = value.decode(get_filesystem_encoding(), 'replace')
-        return value
-else:
-    import io
-    text_type = str
-    raw_input = input
-    string_types = (str,)
-    int_types = (int,)
-    range_type = range
-    isidentifier = lambda x: x.isidentifier()
-    iteritems = lambda x: iter(x.items())
-
-    def is_bytes(x):
-        return isinstance(x, (bytes, memoryview, bytearray))
-
-    def _is_binary_reader(stream, default=False):
-        try:
-            return isinstance(stream.read(0), bytes)
-        except Exception:
-            return default
-            # This happens in some cases where the stream was already
-            # closed.  In this case, we assume the default.
-
-    def _is_binary_writer(stream, default=False):
-        try:
-            stream.write(b'')
-        except Exception:
-            try:
-                stream.write('')
-                return False
-            except Exception:
-                pass
-            return default
-        return True
-
-    def _find_binary_reader(stream):
-        # We need to figure out if the given stream is already binary.
-        # This can happen because the official docs recommend detaching
-        # the streams to get binary streams.  Some code might do this, so
-        # we need to deal with this case explicitly.
-        if _is_binary_reader(stream, False):
-            return stream
-
-        buf = getattr(stream, 'buffer', None)
-
-        # Same situation here; this time we assume that the buffer is
-        # actually binary in case it's closed.
-        if buf is not None and _is_binary_reader(buf, True):
-            return buf
-
-    def _find_binary_writer(stream):
-        # We need to figure out if the given stream is already binary.
-        # This can happen because the official docs recommend detatching
-        # the streams to get binary streams.  Some code might do this, so
-        # we need to deal with this case explicitly.
-        if _is_binary_writer(stream, False):
-            return stream
-
-        buf = getattr(stream, 'buffer', None)
-
-        # Same situation here; this time we assume that the buffer is
-        # actually binary in case it's closed.
-        if buf is not None and _is_binary_writer(buf, True):
-            return buf
-
-    def _stream_is_misconfigured(stream):
-        """A stream is misconfigured if its encoding is ASCII."""
-        # If the stream does not have an encoding set, we assume it's set
-        # to ASCII.  This appears to happen in certain unittest
-        # environments.  It's not quite clear what the correct behavior is
-        # but this at least will force Click to recover somehow.
-        return is_ascii_encoding(getattr(stream, 'encoding', None) or 'ascii')
-
-    def _is_compatible_text_stream(stream, encoding, errors):
-        stream_encoding = getattr(stream, 'encoding', None)
-        stream_errors = getattr(stream, 'errors', None)
-
-        # Perfect match.
-        if stream_encoding == encoding and stream_errors == errors:
-            return True
-
-        # Otherwise, it's only a compatible stream if we did not ask for
-        # an encoding.
-        if encoding is None:
-            return stream_encoding is not None
-
-        return False
-
-    def _force_correct_text_reader(text_reader, encoding, errors,
-                                   force_readable=False):
-        if _is_binary_reader(text_reader, False):
-            binary_reader = text_reader
-        else:
-            # If there is no target encoding set, we need to verify that the
-            # reader is not actually misconfigured.
-            if encoding is None and not _stream_is_misconfigured(text_reader):
-                return text_reader
-
-            if _is_compatible_text_stream(text_reader, encoding, errors):
-                return text_reader
-
-            # If the reader has no encoding, we try to find the underlying
-            # binary reader for it.  If that fails because the environment is
-            # misconfigured, we silently go with the same reader because this
-            # is too common to happen.  In that case, mojibake is better than
-            # exceptions.
-            binary_reader = _find_binary_reader(text_reader)
-            if binary_reader is None:
-                return text_reader
-
-        # At this point, we default the errors to replace instead of strict
-        # because nobody handles those errors anyways and at this point
-        # we're so fundamentally fucked that nothing can repair it.
-        if errors is None:
-            errors = 'replace'
-        return _make_text_stream(binary_reader, encoding, errors,
-                                 force_readable=force_readable)
-
-    def _force_correct_text_writer(text_writer, encoding, errors,
-                                   force_writable=False):
-        if _is_binary_writer(text_writer, False):
-            binary_writer = text_writer
-        else:
-            # If there is no target encoding set, we need to verify that the
-            # writer is not actually misconfigured.
-            if encoding is None and not _stream_is_misconfigured(text_writer):
-                return text_writer
-
-            if _is_compatible_text_stream(text_writer, encoding, errors):
-                return text_writer
-
-            # If the writer has no encoding, we try to find the underlying
-            # binary writer for it.  If that fails because the environment is
-            # misconfigured, we silently go with the same writer because this
-            # is too common to happen.  In that case, mojibake is better than
-            # exceptions.
-            binary_writer = _find_binary_writer(text_writer)
-            if binary_writer is None:
-                return text_writer
-
-        # At this point, we default the errors to replace instead of strict
-        # because nobody handles those errors anyways and at this point
-        # we're so fundamentally fucked that nothing can repair it.
-        if errors is None:
-            errors = 'replace'
-        return _make_text_stream(binary_writer, encoding, errors,
-                                 force_writable=force_writable)
-
-    def get_binary_stdin():
-        reader = _find_binary_reader(sys.stdin)
-        if reader is None:
-            raise RuntimeError('Was not able to determine binary '
-                               'stream for sys.stdin.')
-        return reader
-
-    def get_binary_stdout():
-        writer = _find_binary_writer(sys.stdout)
-        if writer is None:
-            raise RuntimeError('Was not able to determine binary '
-                               'stream for sys.stdout.')
-        return writer
-
-    def get_binary_stderr():
-        writer = _find_binary_writer(sys.stderr)
-        if writer is None:
-            raise RuntimeError('Was not able to determine binary '
-                               'stream for sys.stderr.')
-        return writer
-
-    def get_text_stdin(encoding=None, errors=None):
-        rv = _get_windows_console_stream(sys.stdin, encoding, errors)
-        if rv is not None:
-            return rv
-        return _force_correct_text_reader(sys.stdin, encoding, errors,
-                                          force_readable=True)
-
-    def get_text_stdout(encoding=None, errors=None):
-        rv = _get_windows_console_stream(sys.stdout, encoding, errors)
-        if rv is not None:
-            return rv
-        return _force_correct_text_writer(sys.stdout, encoding, errors,
-                                          force_writable=True)
-
-    def get_text_stderr(encoding=None, errors=None):
-        rv = _get_windows_console_stream(sys.stderr, encoding, errors)
-        if rv is not None:
-            return rv
-        return _force_correct_text_writer(sys.stderr, encoding, errors,
-                                          force_writable=True)
-
-    def filename_to_ui(value):
-        if isinstance(value, bytes):
-            value = value.decode(get_filesystem_encoding(), 'replace')
-        else:
-            value = value.encode('utf-8', 'surrogateescape') \
-                .decode('utf-8', 'replace')
-        return value
-
-
-def get_streerror(e, default=None):
-    if hasattr(e, 'strerror'):
-        msg = e.strerror
-    else:
-        if default is not None:
-            msg = default
-        else:
-            msg = str(e)
-    if isinstance(msg, bytes):
-        msg = msg.decode('utf-8', 'replace')
-    return msg
-
-
-def open_stream(filename, mode='r', encoding=None, errors='strict',
-                atomic=False):
-    # Standard streams first.  These are simple because they don't need
-    # special handling for the atomic flag.  It's entirely ignored.
-    if filename == '-':
-        if any(m in mode for m in ['w', 'a', 'x']):
-            if 'b' in mode:
-                return get_binary_stdout(), False
-            return get_text_stdout(encoding=encoding, errors=errors), False
-        if 'b' in mode:
-            return get_binary_stdin(), False
-        return get_text_stdin(encoding=encoding, errors=errors), False
-
-    # Non-atomic writes directly go out through the regular open functions.
-    if not atomic:
-        if encoding is None:
-            return open(filename, mode), True
-        return io.open(filename, mode, encoding=encoding, errors=errors), True
-
-    # Some usability stuff for atomic writes
-    if 'a' in mode:
-        raise ValueError(
-            'Appending to an existing file is not supported, because that '
-            'would involve an expensive `copy`-operation to a temporary '
-            'file. Open the file in normal `w`-mode and copy explicitly '
-            'if that\'s what you\'re after.'
-        )
-    if 'x' in mode:
-        raise ValueError('Use the `overwrite`-parameter instead.')
-    if 'w' not in mode:
-        raise ValueError('Atomic writes only make sense with `w`-mode.')
-
-    # Atomic writes are more complicated.  They work by opening a file
-    # as a proxy in the same folder and then using the fdopen
-    # functionality to wrap it in a Python file.  Then we wrap it in an
-    # atomic file that moves the file over on close.
-    import tempfile
-    fd, tmp_filename = tempfile.mkstemp(dir=os.path.dirname(filename),
-                                        prefix='.__atomic-write')
-
-    if encoding is not None:
-        f = io.open(fd, mode, encoding=encoding, errors=errors)
-    else:
-        f = os.fdopen(fd, mode)
-
-    return _AtomicFile(f, tmp_filename, os.path.realpath(filename)), True
-
-
-# Used in a destructor call, needs extra protection from interpreter cleanup.
-if hasattr(os, 'replace'):
-    _replace = os.replace
-    _can_replace = True
-else:
-    _replace = os.rename
-    _can_replace = not WIN
-
-
-class _AtomicFile(object):
-
-    def __init__(self, f, tmp_filename, real_filename):
-        self._f = f
-        self._tmp_filename = tmp_filename
-        self._real_filename = real_filename
-        self.closed = False
-
-    @property
-    def name(self):
-        return self._real_filename
-
-    def close(self, delete=False):
-        if self.closed:
-            return
-        self._f.close()
-        if not _can_replace:
-            try:
-                os.remove(self._real_filename)
-            except OSError:
-                pass
-        _replace(self._tmp_filename, self._real_filename)
-        self.closed = True
-
-    def __getattr__(self, name):
-        return getattr(self._f, name)
-
-    def __enter__(self):
-        return self
-
-    def __exit__(self, exc_type, exc_value, tb):
-        self.close(delete=exc_type is not None)
-
-    def __repr__(self):
-        return repr(self._f)
-
-
-auto_wrap_for_ansi = None
-colorama = None
-get_winterm_size = None
-
-
-def strip_ansi(value):
-    return _ansi_re.sub('', value)
-
-
-def should_strip_ansi(stream=None, color=None):
-    if color is None:
-        if stream is None:
-            stream = sys.stdin
-        return not isatty(stream)
-    return not color
-
-
-# If we're on Windows, we provide transparent integration through
-# colorama.  This will make ANSI colors through the echo function
-# work automatically.
-if WIN:
-    # Windows has a smaller terminal
-    DEFAULT_COLUMNS = 79
-
-    from ._winconsole import _get_windows_console_stream, _wrap_std_stream
-
-    def _get_argv_encoding():
-        import locale
-        return locale.getpreferredencoding()
-
-    if PY2:
-        def raw_input(prompt=''):
-            sys.stderr.flush()
-            if prompt:
-                stdout = _default_text_stdout()
-                stdout.write(prompt)
-            stdin = _default_text_stdin()
-            return stdin.readline().rstrip('\r\n')
-
-    try:
-        import colorama
-    except ImportError:
-        pass
-    else:
-        _ansi_stream_wrappers = WeakKeyDictionary()
-
-        def auto_wrap_for_ansi(stream, color=None):
-            """This function wraps a stream so that calls through colorama
-            are issued to the win32 console API to recolor on demand.  It
-            also ensures to reset the colors if a write call is interrupted
-            to not destroy the console afterwards.
-            """
-            try:
-                cached = _ansi_stream_wrappers.get(stream)
-            except Exception:
-                cached = None
-            if cached is not None:
-                return cached
-            strip = should_strip_ansi(stream, color)
-            ansi_wrapper = colorama.AnsiToWin32(stream, strip=strip)
-            rv = ansi_wrapper.stream
-            _write = rv.write
-
-            def _safe_write(s):
-                try:
-                    return _write(s)
-                except:
-                    ansi_wrapper.reset_all()
-                    raise
-
-            rv.write = _safe_write
-            try:
-                _ansi_stream_wrappers[stream] = rv
-            except Exception:
-                pass
-            return rv
-
-        def get_winterm_size():
-            win = colorama.win32.GetConsoleScreenBufferInfo(
-                colorama.win32.STDOUT).srWindow
-            return win.Right - win.Left, win.Bottom - win.Top
-else:
-    def _get_argv_encoding():
-        return getattr(sys.stdin, 'encoding', None) or get_filesystem_encoding()
-
-    _get_windows_console_stream = lambda *x: None
-    _wrap_std_stream = lambda *x: None
-
-
-def term_len(x):
-    return len(strip_ansi(x))
-
-
-def isatty(stream):
-    try:
-        return stream.isatty()
-    except Exception:
-        return False
-
-
-def _make_cached_stream_func(src_func, wrapper_func):
-    cache = WeakKeyDictionary()
-    def func():
-        stream = src_func()
-        try:
-            rv = cache.get(stream)
-        except Exception:
-            rv = None
-        if rv is not None:
-            return rv
-        rv = wrapper_func()
-        try:
-            stream = src_func()  # In case wrapper_func() modified the stream
-            cache[stream] = rv
-        except Exception:
-            pass
-        return rv
-    return func
-
-
-_default_text_stdin = _make_cached_stream_func(
-    lambda: sys.stdin, get_text_stdin)
-_default_text_stdout = _make_cached_stream_func(
-    lambda: sys.stdout, get_text_stdout)
-_default_text_stderr = _make_cached_stream_func(
-    lambda: sys.stderr, get_text_stderr)
-
-
-binary_streams = {
-    'stdin': get_binary_stdin,
-    'stdout': get_binary_stdout,
-    'stderr': get_binary_stderr,
-}
-
-text_streams = {
-    'stdin': get_text_stdin,
-    'stdout': get_text_stdout,
-    'stderr': get_text_stderr,
-}

backend/venv/lib/python3.6/site-packages/click/_termui_impl.py

@@ -1,621 +0,0 @@
-# -*- coding: utf-8 -*-
-"""
-click._termui_impl
-~~~~~~~~~~~~~~~~~~
-
-This module contains implementations for the termui module. To keep the
-import time of Click down, some infrequently used functionality is
-placed in this module and only imported as needed.
-
-:copyright: © 2014 by the Pallets team.
-:license: BSD, see LICENSE.rst for more details.
-"""
-
-import os
-import sys
-import time
-import math
-import contextlib
-from ._compat import _default_text_stdout, range_type, PY2, isatty, \
-     open_stream, strip_ansi, term_len, get_best_encoding, WIN, int_types, \
-     CYGWIN
-from .utils import echo
-from .exceptions import ClickException
-
-
-if os.name == 'nt':
-    BEFORE_BAR = '\r'
-    AFTER_BAR = '\n'
-else:
-    BEFORE_BAR = '\r\033[?25l'
-    AFTER_BAR = '\033[?25h\n'
-
-
-def _length_hint(obj):
-    """Returns the length hint of an object."""
-    try:
-        return len(obj)
-    except (AttributeError, TypeError):
-        try:
-            get_hint = type(obj).__length_hint__
-        except AttributeError:
-            return None
-        try:
-            hint = get_hint(obj)
-        except TypeError:
-            return None
-        if hint is NotImplemented or \
-           not isinstance(hint, int_types) or \
-           hint < 0:
-            return None
-        return hint
-
-
-class ProgressBar(object):
-
-    def __init__(self, iterable, length=None, fill_char='#', empty_char=' ',
-                 bar_template='%(bar)s', info_sep='  ', show_eta=True,
-                 show_percent=None, show_pos=False, item_show_func=None,
-                 label=None, file=None, color=None, width=30):
-        self.fill_char = fill_char
-        self.empty_char = empty_char
-        self.bar_template = bar_template
-        self.info_sep = info_sep
-        self.show_eta = show_eta
-        self.show_percent = show_percent
-        self.show_pos = show_pos
-        self.item_show_func = item_show_func
-        self.label = label or ''
-        if file is None:
-            file = _default_text_stdout()
-        self.file = file
-        self.color = color
-        self.width = width
-        self.autowidth = width == 0
-
-        if length is None:
-            length = _length_hint(iterable)
-        if iterable is None:
-            if length is None:
-                raise TypeError('iterable or length is required')
-            iterable = range_type(length)
-        self.iter = iter(iterable)
-        self.length = length
-        self.length_known = length is not None
-        self.pos = 0
-        self.avg = []
-        self.start = self.last_eta = time.time()
-        self.eta_known = False
-        self.finished = False
-        self.max_width = None
-        self.entered = False
-        self.current_item = None
-        self.is_hidden = not isatty(self.file)
-        self._last_line = None
-        self.short_limit = 0.5
-
-    def __enter__(self):
-        self.entered = True
-        self.render_progress()
-        return self
-
-    def __exit__(self, exc_type, exc_value, tb):
-        self.render_finish()
-
-    def __iter__(self):
-        if not self.entered:
-            raise RuntimeError('You need to use progress bars in a with block.')
-        self.render_progress()
-        return self.generator()
-
-    def is_fast(self):
-        return time.time() - self.start <= self.short_limit
-
-    def render_finish(self):
-        if self.is_hidden or self.is_fast():
-            return
-        self.file.write(AFTER_BAR)
-        self.file.flush()
-
-    @property
-    def pct(self):
-        if self.finished:
-            return 1.0
-        return min(self.pos / (float(self.length) or 1), 1.0)
-
-    @property
-    def time_per_iteration(self):
-        if not self.avg:
-            return 0.0
-        return sum(self.avg) / float(len(self.avg))
-
-    @property
-    def eta(self):
-        if self.length_known and not self.finished:
-            return self.time_per_iteration * (self.length - self.pos)
-        return 0.0
-
-    def format_eta(self):
-        if self.eta_known:
-            t = int(self.eta)
-            seconds = t % 60
-            t //= 60
-            minutes = t % 60
-            t //= 60
-            hours = t % 24
-            t //= 24
-            if t > 0:
-                days = t
-                return '%dd %02d:%02d:%02d' % (days, hours, minutes, seconds)
-            else:
-                return '%02d:%02d:%02d' % (hours, minutes, seconds)
-        return ''
-
-    def format_pos(self):
-        pos = str(self.pos)
-        if self.length_known:
-            pos += '/%s' % self.length
-        return pos
-
-    def format_pct(self):
-        return ('% 4d%%' % int(self.pct * 100))[1:]
-
-    def format_bar(self):
-        if self.length_known:
-            bar_length = int(self.pct * self.width)
-            bar = self.fill_char * bar_length
-            bar += self.empty_char * (self.width - bar_length)
-        elif self.finished:
-            bar = self.fill_char * self.width
-        else:
-            bar = list(self.empty_char * (self.width or 1))
-            if self.time_per_iteration != 0:
-                bar[int((math.cos(self.pos * self.time_per_iteration)
-                    / 2.0 + 0.5) * self.width)] = self.fill_char
-            bar = ''.join(bar)
-        return bar
-
-    def format_progress_line(self):
-        show_percent = self.show_percent
-
-        info_bits = []
-        if self.length_known and show_percent is None:
-            show_percent = not self.show_pos
-
-        if self.show_pos:
-            info_bits.append(self.format_pos())
-        if show_percent:
-            info_bits.append(self.format_pct())
-        if self.show_eta and self.eta_known and not self.finished:
-            info_bits.append(self.format_eta())
-        if self.item_show_func is not None:
-            item_info = self.item_show_func(self.current_item)
-            if item_info is not None:
-                info_bits.append(item_info)
-
-        return (self.bar_template % {
-            'label': self.label,
-            'bar': self.format_bar(),
-            'info': self.info_sep.join(info_bits)
-        }).rstrip()
-
-    def render_progress(self):
-        from .termui import get_terminal_size
-
-        if self.is_hidden:
-            return
-
-        buf = []
-        # Update width in case the terminal has been resized
-        if self.autowidth:
-            old_width = self.width
-            self.width = 0
-            clutter_length = term_len(self.format_progress_line())
-            new_width = max(0, get_terminal_size()[0] - clutter_length)
-            if new_width < old_width:
-                buf.append(BEFORE_BAR)
-                buf.append(' ' * self.max_width)
-                self.max_width = new_width
-            self.width = new_width
-
-        clear_width = self.width
-        if self.max_width is not None:
-            clear_width = self.max_width
-
-        buf.append(BEFORE_BAR)
-        line = self.format_progress_line()
-        line_len = term_len(line)
-        if self.max_width is None or self.max_width < line_len:
-            self.max_width = line_len
-
-        buf.append(line)
-        buf.append(' ' * (clear_width - line_len))
-        line = ''.join(buf)
-        # Render the line only if it changed.
-
-        if line != self._last_line and not self.is_fast():
-            self._last_line = line
-            echo(line, file=self.file, color=self.color, nl=False)
-            self.file.flush()
-
-    def make_step(self, n_steps):
-        self.pos += n_steps
-        if self.length_known and self.pos >= self.length:
-            self.finished = True
-
-        if (time.time() - self.last_eta) < 1.0:
-            return
-
-        self.last_eta = time.time()
-
-        # self.avg is a rolling list of length <= 7 of steps where steps are
-        # defined as time elapsed divided by the total progress through
-        # self.length.
-        if self.pos:
-            step = (time.time() - self.start) / self.pos
-        else:
-            step = time.time() - self.start
-
-        self.avg = self.avg[-6:] + [step]
-
-        self.eta_known = self.length_known
-
-    def update(self, n_steps):
-        self.make_step(n_steps)
-        self.render_progress()
-
-    def finish(self):
-        self.eta_known = 0
-        self.current_item = None
-        self.finished = True
-
-    def generator(self):
-        """
-        Returns a generator which yields the items added to the bar during
-        construction, and updates the progress bar *after* the yielded block
-        returns.
-        """
-        if not self.entered:
-            raise RuntimeError('You need to use progress bars in a with block.')
-
-        if self.is_hidden:
-            for rv in self.iter:
-                yield rv
-        else:
-            for rv in self.iter:
-                self.current_item = rv
-                yield rv
-                self.update(1)
-            self.finish()
-            self.render_progress()
-
-
-def pager(generator, color=None):
-    """Decide what method to use for paging through text."""
-    stdout = _default_text_stdout()
-    if not isatty(sys.stdin) or not isatty(stdout):
-        return _nullpager(stdout, generator, color)
-    pager_cmd = (os.environ.get('PAGER', None) or '').strip()
-    if pager_cmd:
-        if WIN:
-            return _tempfilepager(generator, pager_cmd, color)
-        return _pipepager(generator, pager_cmd, color)
-    if os.environ.get('TERM') in ('dumb', 'emacs'):
-        return _nullpager(stdout, generator, color)
-    if WIN or sys.platform.startswith('os2'):
-        return _tempfilepager(generator, 'more <', color)
-    if hasattr(os, 'system') and os.system('(less) 2>/dev/null') == 0:
-        return _pipepager(generator, 'less', color)
-
-    import tempfile
-    fd, filename = tempfile.mkstemp()
-    os.close(fd)
-    try:
-        if hasattr(os, 'system') and os.system('more "%s"' % filename) == 0:
-            return _pipepager(generator, 'more', color)
-        return _nullpager(stdout, generator, color)
-    finally:
-        os.unlink(filename)
-
-
-def _pipepager(generator, cmd, color):
-    """Page through text by feeding it to another program.  Invoking a
-    pager through this might support colors.
-    """
-    import subprocess
-    env = dict(os.environ)
-
-    # If we're piping to less we might support colors under the
-    # condition that
-    cmd_detail = cmd.rsplit('/', 1)[-1].split()
-    if color is None and cmd_detail[0] == 'less':
-        less_flags = os.environ.get('LESS', '') + ' '.join(cmd_detail[1:])
-        if not less_flags:
-            env['LESS'] = '-R'
-            color = True
-        elif 'r' in less_flags or 'R' in less_flags:
-            color = True
-
-    c = subprocess.Popen(cmd, shell=True, stdin=subprocess.PIPE,
-                         env=env)
-    encoding = get_best_encoding(c.stdin)
-    try:
-        for text in generator:
-            if not color:
-                text = strip_ansi(text)
-
-            c.stdin.write(text.encode(encoding, 'replace'))
-    except (IOError, KeyboardInterrupt):
-        pass
-    else:
-        c.stdin.close()
-
-    # Less doesn't respect ^C, but catches it for its own UI purposes (aborting
-    # search or other commands inside less).
-    #
-    # That means when the user hits ^C, the parent process (click) terminates,
-    # but less is still alive, paging the output and messing up the terminal.
-    #
-    # If the user wants to make the pager exit on ^C, they should set
-    # `LESS='-K'`. It's not our decision to make.
-    while True:
-        try:
-            c.wait()
-        except KeyboardInterrupt:
-            pass
-        else:
-            break
-
-
-def _tempfilepager(generator, cmd, color):
-    """Page through text by invoking a program on a temporary file."""
-    import tempfile
-    filename = tempfile.mktemp()
-    # TODO: This never terminates if the passed generator never terminates.
-    text = "".join(generator)
-    if not color:
-        text = strip_ansi(text)
-    encoding = get_best_encoding(sys.stdout)
-    with open_stream(filename, 'wb')[0] as f:
-        f.write(text.encode(encoding))
-    try:
-        os.system(cmd + ' "' + filename + '"')
-    finally:
-        os.unlink(filename)
-
-
-def _nullpager(stream, generator, color):
-    """Simply print unformatted text.  This is the ultimate fallback."""
-    for text in generator:
-        if not color:
-            text = strip_ansi(text)
-        stream.write(text)
-
-
-class Editor(object):
-
-    def __init__(self, editor=None, env=None, require_save=True,
-                 extension='.txt'):
-        self.editor = editor
-        self.env = env
-        self.require_save = require_save
-        self.extension = extension
-
-    def get_editor(self):
-        if self.editor is not None:
-            return self.editor
-        for key in 'VISUAL', 'EDITOR':
-            rv = os.environ.get(key)
-            if rv:
-                return rv
-        if WIN:
-            return 'notepad'
-        for editor in 'vim', 'nano':
-            if os.system('which %s >/dev/null 2>&1' % editor) == 0:
-                return editor
-        return 'vi'
-
-    def edit_file(self, filename):
-        import subprocess
-        editor = self.get_editor()
-        if self.env:
-            environ = os.environ.copy()
-            environ.update(self.env)
-        else:
-            environ = None
-        try:
-            c = subprocess.Popen('%s "%s"' % (editor, filename),
-                                 env=environ, shell=True)
-            exit_code = c.wait()
-            if exit_code != 0:
-                raise ClickException('%s: Editing failed!' % editor)
-        except OSError as e:
-            raise ClickException('%s: Editing failed: %s' % (editor, e))
-
-    def edit(self, text):
-        import tempfile
-
-        text = text or ''
-        if text and not text.endswith('\n'):
-            text += '\n'
-
-        fd, name = tempfile.mkstemp(prefix='editor-', suffix=self.extension)
-        try:
-            if WIN:
-                encoding = 'utf-8-sig'
-                text = text.replace('\n', '\r\n')
-            else:
-                encoding = 'utf-8'
-            text = text.encode(encoding)
-
-            f = os.fdopen(fd, 'wb')
-            f.write(text)
-            f.close()
-            timestamp = os.path.getmtime(name)
-
-            self.edit_file(name)
-
-            if self.require_save \
-               and os.path.getmtime(name) == timestamp:
-                return None
-
-            f = open(name, 'rb')
-            try:
-                rv = f.read()
-            finally:
-                f.close()
-            return rv.decode('utf-8-sig').replace('\r\n', '\n')
-        finally:
-            os.unlink(name)
-
-
-def open_url(url, wait=False, locate=False):
-    import subprocess
-
-    def _unquote_file(url):
-        try:
-            import urllib
-        except ImportError:
-            import urllib
-        if url.startswith('file://'):
-            url = urllib.unquote(url[7:])
-        return url
-
-    if sys.platform == 'darwin':
-        args = ['open']
-        if wait:
-            args.append('-W')
-        if locate:
-            args.append('-R')
-        args.append(_unquote_file(url))
-        null = open('/dev/null', 'w')
-        try:
-            return subprocess.Popen(args, stderr=null).wait()
-        finally:
-            null.close()
-    elif WIN:
-        if locate:
-            url = _unquote_file(url)
-            args = 'explorer /select,"%s"' % _unquote_file(
-                url.replace('"', ''))
-        else:
-            args = 'start %s "" "%s"' % (
-                wait and '/WAIT' or '', url.replace('"', ''))
-        return os.system(args)
-    elif CYGWIN:
-        if locate:
-            url = _unquote_file(url)
-            args = 'cygstart "%s"' % (os.path.dirname(url).replace('"', ''))
-        else:
-            args = 'cygstart %s "%s"' % (
-                wait and '-w' or '', url.replace('"', ''))
-        return os.system(args)
-
-    try:
-        if locate:
-            url = os.path.dirname(_unquote_file(url)) or '.'
-        else:
-            url = _unquote_file(url)
-        c = subprocess.Popen(['xdg-open', url])
-        if wait:
-            return c.wait()
-        return 0
-    except OSError:
-        if url.startswith(('http://', 'https://')) and not locate and not wait:
-            import webbrowser
-            webbrowser.open(url)
-            return 0
-        return 1
-
-
-def _translate_ch_to_exc(ch):
-    if ch == u'\x03':
-        raise KeyboardInterrupt()
-    if ch == u'\x04' and not WIN:  # Unix-like, Ctrl+D
-        raise EOFError()
-    if ch == u'\x1a' and WIN:      # Windows, Ctrl+Z
-        raise EOFError()
-
-
-if WIN:
-    import msvcrt
-
-    @contextlib.contextmanager
-    def raw_terminal():
-        yield
-
-    def getchar(echo):
-        # The function `getch` will return a bytes object corresponding to
-        # the pressed character. Since Windows 10 build 1803, it will also
-        # return \x00 when called a second time after pressing a regular key.
-        #
-        # `getwch` does not share this probably-bugged behavior. Moreover, it
-        # returns a Unicode object by default, which is what we want.
-        #
-        # Either of these functions will return \x00 or \xe0 to indicate
-        # a special key, and you need to call the same function again to get
-        # the "rest" of the code. The fun part is that \u00e0 is
-        # "latin small letter a with grave", so if you type that on a French
-        # keyboard, you _also_ get a \xe0.
-        # E.g., consider the Up arrow. This returns \xe0 and then \x48. The
-        # resulting Unicode string reads as "a with grave" + "capital H".
-        # This is indistinguishable from when the user actually types
-        # "a with grave" and then "capital H".
-        #
-        # When \xe0 is returned, we assume it's part of a special-key sequence
-        # and call `getwch` again, but that means that when the user types
-        # the \u00e0 character, `getchar` doesn't return until a second
-        # character is typed.
-        # The alternative is returning immediately, but that would mess up
-        # cross-platform handling of arrow keys and others that start with
-        # \xe0. Another option is using `getch`, but then we can't reliably
-        # read non-ASCII characters, because return values of `getch` are
-        # limited to the current 8-bit codepage.
-        #
-        # Anyway, Click doesn't claim to do this Right(tm), and using `getwch`
-        # is doing the right thing in more situations than with `getch`.
-        if echo:
-            func = msvcrt.getwche
-        else:
-            func = msvcrt.getwch
-
-        rv = func()
-        if rv in (u'\x00', u'\xe0'):
-            # \x00 and \xe0 are control characters that indicate special key,
-            # see above.
-            rv += func()
-        _translate_ch_to_exc(rv)
-        return rv
-else:
-    import tty
-    import termios
-
-    @contextlib.contextmanager
-    def raw_terminal():
-        if not isatty(sys.stdin):
-            f = open('/dev/tty')
-            fd = f.fileno()
-        else:
-            fd = sys.stdin.fileno()
-            f = None
-        try:
-            old_settings = termios.tcgetattr(fd)
-            try:
-                tty.setraw(fd)
-                yield fd
-            finally:
-                termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
-                sys.stdout.flush()
-                if f is not None:
-                    f.close()
-        except termios.error:
-            pass
-
-    def getchar(echo):
-        with raw_terminal() as fd:
-            ch = os.read(fd, 32)
-            ch = ch.decode(get_best_encoding(sys.stdin), 'replace')
-            if echo and isatty(sys.stdout):
-                sys.stdout.write(ch)
-            _translate_ch_to_exc(ch)
-            return ch

backend/venv/lib/python3.6/site-packages/click/_textwrap.py

@@ -1,38 +0,0 @@
-import textwrap
-from contextlib import contextmanager
-
-
-class TextWrapper(textwrap.TextWrapper):
-
-    def _handle_long_word(self, reversed_chunks, cur_line, cur_len, width):
-        space_left = max(width - cur_len, 1)
-
-        if self.break_long_words:
-            last = reversed_chunks[-1]
-            cut = last[:space_left]
-            res = last[space_left:]
-            cur_line.append(cut)
-            reversed_chunks[-1] = res
-        elif not cur_line:
-            cur_line.append(reversed_chunks.pop())
-
-    @contextmanager
-    def extra_indent(self, indent):
-        old_initial_indent = self.initial_indent
-        old_subsequent_indent = self.subsequent_indent
-        self.initial_indent += indent
-        self.subsequent_indent += indent
-        try:
-            yield
-        finally:
-            self.initial_indent = old_initial_indent
-            self.subsequent_indent = old_subsequent_indent
-
-    def indent_only(self, text):
-        rv = []
-        for idx, line in enumerate(text.splitlines()):
-            indent = self.initial_indent
-            if idx > 0:
-                indent = self.subsequent_indent
-            rv.append(indent + line)
-        return '\n'.join(rv)

backend/venv/lib/python3.6/site-packages/click/_unicodefun.py

@@ -1,125 +0,0 @@
-import os
-import sys
-import codecs
-
-from ._compat import PY2
-
-
-# If someone wants to vendor click, we want to ensure the
-# correct package is discovered.  Ideally we could use a
-# relative import here but unfortunately Python does not
-# support that.
-click = sys.modules[__name__.rsplit('.', 1)[0]]
-
-
-def _find_unicode_literals_frame():
-    import __future__
-    if not hasattr(sys, '_getframe'):  # not all Python implementations have it
-        return 0
-    frm = sys._getframe(1)
-    idx = 1
-    while frm is not None:
-        if frm.f_globals.get('__name__', '').startswith('click.'):
-            frm = frm.f_back
-            idx += 1
-        elif frm.f_code.co_flags & __future__.unicode_literals.compiler_flag:
-            return idx
-        else:
-            break
-    return 0
-
-
-def _check_for_unicode_literals():
-    if not __debug__:
-        return
-    if not PY2 or click.disable_unicode_literals_warning:
-        return
-    bad_frame = _find_unicode_literals_frame()
-    if bad_frame <= 0:
-        return
-    from warnings import warn
-    warn(Warning('Click detected the use of the unicode_literals '
-                 '__future__ import.  This is heavily discouraged '
-                 'because it can introduce subtle bugs in your '
-                 'code.  You should instead use explicit u"" literals '
-                 'for your unicode strings.  For more information see '
-                 'https://click.palletsprojects.com/python3/'),
-         stacklevel=bad_frame)
-
-
-def _verify_python3_env():
-    """Ensures that the environment is good for unicode on Python 3."""
-    if PY2:
-        return
-    try:
-        import locale
-        fs_enc = codecs.lookup(locale.getpreferredencoding()).name
-    except Exception:
-        fs_enc = 'ascii'
-    if fs_enc != 'ascii':
-        return
-
-    extra = ''
-    if os.name == 'posix':
-        import subprocess
-        try:
-            rv = subprocess.Popen(['locale', '-a'], stdout=subprocess.PIPE,
-                                  stderr=subprocess.PIPE).communicate()[0]
-        except OSError:
-            rv = b''
-        good_locales = set()
-        has_c_utf8 = False
-
-        # Make sure we're operating on text here.
-        if isinstance(rv, bytes):
-            rv = rv.decode('ascii', 'replace')
-
-        for line in rv.splitlines():
-            locale = line.strip()
-            if locale.lower().endswith(('.utf-8', '.utf8')):
-                good_locales.add(locale)
-                if locale.lower() in ('c.utf8', 'c.utf-8'):
-                    has_c_utf8 = True
-
-        extra += '\n\n'
-        if not good_locales:
-            extra += (
-                'Additional information: on this system no suitable UTF-8\n'
-                'locales were discovered.  This most likely requires resolving\n'
-                'by reconfiguring the locale system.'
-            )
-        elif has_c_utf8:
-            extra += (
-                'This system supports the C.UTF-8 locale which is recommended.\n'
-                'You might be able to resolve your issue by exporting the\n'
-                'following environment variables:\n\n'
-                '    export LC_ALL=C.UTF-8\n'
-                '    export LANG=C.UTF-8'
-            )
-        else:
-            extra += (
-                'This system lists a couple of UTF-8 supporting locales that\n'
-                'you can pick from.  The following suitable locales were\n'
-                'discovered: %s'
-            ) % ', '.join(sorted(good_locales))
-
-        bad_locale = None
-        for locale in os.environ.get('LC_ALL'), os.environ.get('LANG'):
-            if locale and locale.lower().endswith(('.utf-8', '.utf8')):
-                bad_locale = locale
-            if locale is not None:
-                break
-        if bad_locale is not None:
-            extra += (
-                '\n\nClick discovered that you exported a UTF-8 locale\n'
-                'but the locale system could not pick up from it because\n'
-                'it does not exist.  The exported locale is "%s" but it\n'
-                'is not supported'
-            ) % bad_locale
-
-    raise RuntimeError(
-        'Click will abort further execution because Python 3 was'
-        ' configured to use ASCII as encoding for the environment.'
-        ' Consult https://click.palletsprojects.com/en/7.x/python3/ for'
-        ' mitigation steps.' + extra
-    )

backend/venv/lib/python3.6/site-packages/click/_winconsole.py

@@ -1,307 +0,0 @@
-# -*- coding: utf-8 -*-
-# This module is based on the excellent work by Adam Bartoš who
-# provided a lot of what went into the implementation here in
-# the discussion to issue1602 in the Python bug tracker.
-#
-# There are some general differences in regards to how this works
-# compared to the original patches as we do not need to patch
-# the entire interpreter but just work in our little world of
-# echo and prmopt.
-
-import io
-import os
-import sys
-import zlib
-import time
-import ctypes
-import msvcrt
-from ._compat import _NonClosingTextIOWrapper, text_type, PY2
-from ctypes import byref, POINTER, c_int, c_char, c_char_p, \
-     c_void_p, py_object, c_ssize_t, c_ulong, windll, WINFUNCTYPE
-try:
-    from ctypes import pythonapi
-    PyObject_GetBuffer = pythonapi.PyObject_GetBuffer
-    PyBuffer_Release = pythonapi.PyBuffer_Release
-except ImportError:
-    pythonapi = None
-from ctypes.wintypes import LPWSTR, LPCWSTR
-
-
-c_ssize_p = POINTER(c_ssize_t)
-
-kernel32 = windll.kernel32
-GetStdHandle = kernel32.GetStdHandle
-ReadConsoleW = kernel32.ReadConsoleW
-WriteConsoleW = kernel32.WriteConsoleW
-GetLastError = kernel32.GetLastError
-GetCommandLineW = WINFUNCTYPE(LPWSTR)(
-    ('GetCommandLineW', windll.kernel32))
-CommandLineToArgvW = WINFUNCTYPE(
-    POINTER(LPWSTR), LPCWSTR, POINTER(c_int))(
-        ('CommandLineToArgvW', windll.shell32))
-
-
-STDIN_HANDLE = GetStdHandle(-10)
-STDOUT_HANDLE = GetStdHandle(-11)
-STDERR_HANDLE = GetStdHandle(-12)
-
-
-PyBUF_SIMPLE = 0
-PyBUF_WRITABLE = 1
-
-ERROR_SUCCESS = 0
-ERROR_NOT_ENOUGH_MEMORY = 8
-ERROR_OPERATION_ABORTED = 995
-
-STDIN_FILENO = 0
-STDOUT_FILENO = 1
-STDERR_FILENO = 2
-
-EOF = b'\x1a'
-MAX_BYTES_WRITTEN = 32767
-
-
-class Py_buffer(ctypes.Structure):
-    _fields_ = [
-        ('buf', c_void_p),
-        ('obj', py_object),
-        ('len', c_ssize_t),
-        ('itemsize', c_ssize_t),
-        ('readonly', c_int),
-        ('ndim', c_int),
-        ('format', c_char_p),
-        ('shape', c_ssize_p),
-        ('strides', c_ssize_p),
-        ('suboffsets', c_ssize_p),
-        ('internal', c_void_p)
-    ]
-
-    if PY2:
-        _fields_.insert(-1, ('smalltable', c_ssize_t * 2))
-
-
-# On PyPy we cannot get buffers so our ability to operate here is
-# serverly limited.
-if pythonapi is None:
-    get_buffer = None
-else:
-    def get_buffer(obj, writable=False):
-        buf = Py_buffer()
-        flags = PyBUF_WRITABLE if writable else PyBUF_SIMPLE
-        PyObject_GetBuffer(py_object(obj), byref(buf), flags)
-        try:
-            buffer_type = c_char * buf.len
-            return buffer_type.from_address(buf.buf)
-        finally:
-            PyBuffer_Release(byref(buf))
-
-
-class _WindowsConsoleRawIOBase(io.RawIOBase):
-
-    def __init__(self, handle):
-        self.handle = handle
-
-    def isatty(self):
-        io.RawIOBase.isatty(self)
-        return True
-
-
-class _WindowsConsoleReader(_WindowsConsoleRawIOBase):
-
-    def readable(self):
-        return True
-
-    def readinto(self, b):
-        bytes_to_be_read = len(b)
-        if not bytes_to_be_read:
-            return 0
-        elif bytes_to_be_read % 2:
-            raise ValueError('cannot read odd number of bytes from '
-                             'UTF-16-LE encoded console')
-
-        buffer = get_buffer(b, writable=True)
-        code_units_to_be_read = bytes_to_be_read // 2
-        code_units_read = c_ulong()
-
-        rv = ReadConsoleW(self.handle, buffer, code_units_to_be_read,
-                          byref(code_units_read), None)
-        if GetLastError() == ERROR_OPERATION_ABORTED:
-            # wait for KeyboardInterrupt
-            time.sleep(0.1)
-        if not rv:
-            raise OSError('Windows error: %s' % GetLastError())
-
-        if buffer[0] == EOF:
-            return 0
-        return 2 * code_units_read.value
-
-
-class _WindowsConsoleWriter(_WindowsConsoleRawIOBase):
-
-    def writable(self):
-        return True
-
-    @staticmethod
-    def _get_error_message(errno):
-        if errno == ERROR_SUCCESS:
-            return 'ERROR_SUCCESS'
-        elif errno == ERROR_NOT_ENOUGH_MEMORY:
-            return 'ERROR_NOT_ENOUGH_MEMORY'
-        return 'Windows error %s' % errno
-
-    def write(self, b):
-        bytes_to_be_written = len(b)
-        buf = get_buffer(b)
-        code_units_to_be_written = min(bytes_to_be_written,
-                                       MAX_BYTES_WRITTEN) // 2
-        code_units_written = c_ulong()
-
-        WriteConsoleW(self.handle, buf, code_units_to_be_written,
-                      byref(code_units_written), None)
-        bytes_written = 2 * code_units_written.value
-
-        if bytes_written == 0 and bytes_to_be_written > 0:
-            raise OSError(self._get_error_message(GetLastError()))
-        return bytes_written
-
-
-class ConsoleStream(object):
-
-    def __init__(self, text_stream, byte_stream):
-        self._text_stream = text_stream
-        self.buffer = byte_stream
-
-    @property
-    def name(self):
-        return self.buffer.name
-
-    def write(self, x):
-        if isinstance(x, text_type):
-            return self._text_stream.write(x)
-        try:
-            self.flush()
-        except Exception:
-            pass
-        return self.buffer.write(x)
-
-    def writelines(self, lines):
-        for line in lines:
-            self.write(line)
-
-    def __getattr__(self, name):
-        return getattr(self._text_stream, name)
-
-    def isatty(self):
-        return self.buffer.isatty()
-
-    def __repr__(self):
-        return '<ConsoleStream name=%r encoding=%r>' % (
-            self.name,
-            self.encoding,
-        )
-
-
-class WindowsChunkedWriter(object):
-    """
-    Wraps a stream (such as stdout), acting as a transparent proxy for all
-    attribute access apart from method 'write()' which we wrap to write in
-    limited chunks due to a Windows limitation on binary console streams.
-    """
-    def __init__(self, wrapped):
-        # double-underscore everything to prevent clashes with names of
-        # attributes on the wrapped stream object.
-        self.__wrapped = wrapped
-
-    def __getattr__(self, name):
-        return getattr(self.__wrapped, name)
-
-    def write(self, text):
-        total_to_write = len(text)
-        written = 0
-
-        while written < total_to_write:
-            to_write = min(total_to_write - written, MAX_BYTES_WRITTEN)
-            self.__wrapped.write(text[written:written+to_write])
-            written += to_write
-
-
-_wrapped_std_streams = set()
-
-
-def _wrap_std_stream(name):
-    # Python 2 & Windows 7 and below
-    if PY2 and sys.getwindowsversion()[:2] <= (6, 1) and name not in _wrapped_std_streams:
-        setattr(sys, name, WindowsChunkedWriter(getattr(sys, name)))
-        _wrapped_std_streams.add(name)
-
-
-def _get_text_stdin(buffer_stream):
-    text_stream = _NonClosingTextIOWrapper(
-        io.BufferedReader(_WindowsConsoleReader(STDIN_HANDLE)),
-        'utf-16-le', 'strict', line_buffering=True)
-    return ConsoleStream(text_stream, buffer_stream)
-
-
-def _get_text_stdout(buffer_stream):
-    text_stream = _NonClosingTextIOWrapper(
-        io.BufferedWriter(_WindowsConsoleWriter(STDOUT_HANDLE)),
-        'utf-16-le', 'strict', line_buffering=True)
-    return ConsoleStream(text_stream, buffer_stream)
-
-
-def _get_text_stderr(buffer_stream):
-    text_stream = _NonClosingTextIOWrapper(
-        io.BufferedWriter(_WindowsConsoleWriter(STDERR_HANDLE)),
-        'utf-16-le', 'strict', line_buffering=True)
-    return ConsoleStream(text_stream, buffer_stream)
-
-
-if PY2:
-    def _hash_py_argv():
-        return zlib.crc32('\x00'.join(sys.argv[1:]))
-
-    _initial_argv_hash = _hash_py_argv()
-
-    def _get_windows_argv():
-        argc = c_int(0)
-        argv_unicode = CommandLineToArgvW(GetCommandLineW(), byref(argc))
-        argv = [argv_unicode[i] for i in range(0, argc.value)]
-
-        if not hasattr(sys, 'frozen'):
-            argv = argv[1:]
-            while len(argv) > 0:
-                arg = argv[0]
-                if not arg.startswith('-') or arg == '-':
-                    break
-                argv = argv[1:]
-                if arg.startswith(('-c', '-m')):
-                    break
-
-        return argv[1:]
-
-
-_stream_factories = {
-    0: _get_text_stdin,
-    1: _get_text_stdout,
-    2: _get_text_stderr,
-}
-
-
-def _get_windows_console_stream(f, encoding, errors):
-    if get_buffer is not None and \
-       encoding in ('utf-16-le', None) \
-       and errors in ('strict', None) and \
-       hasattr(f, 'isatty') and f.isatty():
-        func = _stream_factories.get(f.fileno())
-        if func is not None:
-            if not PY2:
-                f = getattr(f, 'buffer', None)
-                if f is None:
-                    return None
-            else:
-                # If we are on Python 2 we need to set the stream that we
-                # deal with to binary mode as otherwise the exercise if a
-                # bit moot.  The same problems apply as for
-                # get_binary_stdin and friends from _compat.
-                msvcrt.setmode(f.fileno(), os.O_BINARY)
-            return func(f)

backend/venv/lib/python3.6/site-packages/click/decorators.py

@@ -1,311 +0,0 @@
-import sys
-import inspect
-
-from functools import update_wrapper
-
-from ._compat import iteritems
-from ._unicodefun import _check_for_unicode_literals
-from .utils import echo
-from .globals import get_current_context
-
-
-def pass_context(f):
-    """Marks a callback as wanting to receive the current context
-    object as first argument.
-    """
-    def new_func(*args, **kwargs):
-        return f(get_current_context(), *args, **kwargs)
-    return update_wrapper(new_func, f)
-
-
-def pass_obj(f):
-    """Similar to :func:`pass_context`, but only pass the object on the
-    context onwards (:attr:`Context.obj`).  This is useful if that object
-    represents the state of a nested system.
-    """
-    def new_func(*args, **kwargs):
-        return f(get_current_context().obj, *args, **kwargs)
-    return update_wrapper(new_func, f)
-
-
-def make_pass_decorator(object_type, ensure=False):
-    """Given an object type this creates a decorator that will work
-    similar to :func:`pass_obj` but instead of passing the object of the
-    current context, it will find the innermost context of type
-    :func:`object_type`.
-
-    This generates a decorator that works roughly like this::
-
-        from functools import update_wrapper
-
-        def decorator(f):
-            @pass_context
-            def new_func(ctx, *args, **kwargs):
-                obj = ctx.find_object(object_type)
-                return ctx.invoke(f, obj, *args, **kwargs)
-            return update_wrapper(new_func, f)
-        return decorator
-
-    :param object_type: the type of the object to pass.
-    :param ensure: if set to `True`, a new object will be created and
-                   remembered on the context if it's not there yet.
-    """
-    def decorator(f):
-        def new_func(*args, **kwargs):
-            ctx = get_current_context()
-            if ensure:
-                obj = ctx.ensure_object(object_type)
-            else:
-                obj = ctx.find_object(object_type)
-            if obj is None:
-                raise RuntimeError('Managed to invoke callback without a '
-                                   'context object of type %r existing'
-                                   % object_type.__name__)
-            return ctx.invoke(f, obj, *args, **kwargs)
-        return update_wrapper(new_func, f)
-    return decorator
-
-
-def _make_command(f, name, attrs, cls):
-    if isinstance(f, Command):
-        raise TypeError('Attempted to convert a callback into a '
-                        'command twice.')
-    try:
-        params = f.__click_params__
-        params.reverse()
-        del f.__click_params__
-    except AttributeError:
-        params = []
-    help = attrs.get('help')
-    if help is None:
-        help = inspect.getdoc(f)
-        if isinstance(help, bytes):
-            help = help.decode('utf-8')
-    else:
-        help = inspect.cleandoc(help)
-    attrs['help'] = help
-    _check_for_unicode_literals()
-    return cls(name=name or f.__name__.lower().replace('_', '-'),
-               callback=f, params=params, **attrs)
-
-
-def command(name=None, cls=None, **attrs):
-    r"""Creates a new :class:`Command` and uses the decorated function as
-    callback.  This will also automatically attach all decorated
-    :func:`option`\s and :func:`argument`\s as parameters to the command.
-
-    The name of the command defaults to the name of the function.  If you
-    want to change that, you can pass the intended name as the first
-    argument.
-
-    All keyword arguments are forwarded to the underlying command class.
-
-    Once decorated the function turns into a :class:`Command` instance
-    that can be invoked as a command line utility or be attached to a
-    command :class:`Group`.
-
-    :param name: the name of the command.  This defaults to the function
-                 name with underscores replaced by dashes.
-    :param cls: the command class to instantiate.  This defaults to
-                :class:`Command`.
-    """
-    if cls is None:
-        cls = Command
-    def decorator(f):
-        cmd = _make_command(f, name, attrs, cls)
-        cmd.__doc__ = f.__doc__
-        return cmd
-    return decorator
-
-
-def group(name=None, **attrs):
-    """Creates a new :class:`Group` with a function as callback.  This
-    works otherwise the same as :func:`command` just that the `cls`
-    parameter is set to :class:`Group`.
-    """
-    attrs.setdefault('cls', Group)
-    return command(name, **attrs)
-
-
-def _param_memo(f, param):
-    if isinstance(f, Command):
-        f.params.append(param)
-    else:
-        if not hasattr(f, '__click_params__'):
-            f.__click_params__ = []
-        f.__click_params__.append(param)
-
-
-def argument(*param_decls, **attrs):
-    """Attaches an argument to the command.  All positional arguments are
-    passed as parameter declarations to :class:`Argument`; all keyword
-    arguments are forwarded unchanged (except ``cls``).
-    This is equivalent to creating an :class:`Argument` instance manually
-    and attaching it to the :attr:`Command.params` list.
-
-    :param cls: the argument class to instantiate.  This defaults to
-                :class:`Argument`.
-    """
-    def decorator(f):
-        ArgumentClass = attrs.pop('cls', Argument)
-        _param_memo(f, ArgumentClass(param_decls, **attrs))
-        return f
-    return decorator
-
-
-def option(*param_decls, **attrs):
-    """Attaches an option to the command.  All positional arguments are
-    passed as parameter declarations to :class:`Option`; all keyword
-    arguments are forwarded unchanged (except ``cls``).
-    This is equivalent to creating an :class:`Option` instance manually
-    and attaching it to the :attr:`Command.params` list.
-
-    :param cls: the option class to instantiate.  This defaults to
-                :class:`Option`.
-    """
-    def decorator(f):
-        # Issue 926, copy attrs, so pre-defined options can re-use the same cls=
-        option_attrs = attrs.copy()
-
-        if 'help' in option_attrs:
-            option_attrs['help'] = inspect.cleandoc(option_attrs['help'])
-        OptionClass = option_attrs.pop('cls', Option)
-        _param_memo(f, OptionClass(param_decls, **option_attrs))
-        return f
-    return decorator
-
-
-def confirmation_option(*param_decls, **attrs):
-    """Shortcut for confirmation prompts that can be ignored by passing
-    ``--yes`` as parameter.
-
-    This is equivalent to decorating a function with :func:`option` with
-    the following parameters::
-
-        def callback(ctx, param, value):
-            if not value:
-                ctx.abort()
-
-        @click.command()
-        @click.option('--yes', is_flag=True, callback=callback,
-                      expose_value=False, prompt='Do you want to continue?')
-        def dropdb():
-            pass
-    """
-    def decorator(f):
-        def callback(ctx, param, value):
-            if not value:
-                ctx.abort()
-        attrs.setdefault('is_flag', True)
-        attrs.setdefault('callback', callback)
-        attrs.setdefault('expose_value', False)
-        attrs.setdefault('prompt', 'Do you want to continue?')
-        attrs.setdefault('help', 'Confirm the action without prompting.')
-        return option(*(param_decls or ('--yes',)), **attrs)(f)
-    return decorator
-
-
-def password_option(*param_decls, **attrs):
-    """Shortcut for password prompts.
-
-    This is equivalent to decorating a function with :func:`option` with
-    the following parameters::
-
-        @click.command()
-        @click.option('--password', prompt=True, confirmation_prompt=True,
-                      hide_input=True)
-        def changeadmin(password):
-            pass
-    """
-    def decorator(f):
-        attrs.setdefault('prompt', True)
-        attrs.setdefault('confirmation_prompt', True)
-        attrs.setdefault('hide_input', True)
-        return option(*(param_decls or ('--password',)), **attrs)(f)
-    return decorator
-
-
-def version_option(version=None, *param_decls, **attrs):
-    """Adds a ``--version`` option which immediately ends the program
-    printing out the version number.  This is implemented as an eager
-    option that prints the version and exits the program in the callback.
-
-    :param version: the version number to show.  If not provided Click
-                    attempts an auto discovery via setuptools.
-    :param prog_name: the name of the program (defaults to autodetection)
-    :param message: custom message to show instead of the default
-                    (``'%(prog)s, version %(version)s'``)
-    :param others: everything else is forwarded to :func:`option`.
-    """
-    if version is None:
-        if hasattr(sys, '_getframe'):
-            module = sys._getframe(1).f_globals.get('__name__')
-        else:
-            module = ''
-
-    def decorator(f):
-        prog_name = attrs.pop('prog_name', None)
-        message = attrs.pop('message', '%(prog)s, version %(version)s')
-
-        def callback(ctx, param, value):
-            if not value or ctx.resilient_parsing:
-                return
-            prog = prog_name
-            if prog is None:
-                prog = ctx.find_root().info_name
-            ver = version
-            if ver is None:
-                try:
-                    import pkg_resources
-                except ImportError:
-                    pass
-                else:
-                    for dist in pkg_resources.working_set:
-                        scripts = dist.get_entry_map().get('console_scripts') or {}
-                        for script_name, entry_point in iteritems(scripts):
-                            if entry_point.module_name == module:
-                                ver = dist.version
-                                break
-                if ver is None:
-                    raise RuntimeError('Could not determine version')
-            echo(message % {
-                'prog': prog,
-                'version': ver,
-            }, color=ctx.color)
-            ctx.exit()
-
-        attrs.setdefault('is_flag', True)
-        attrs.setdefault('expose_value', False)
-        attrs.setdefault('is_eager', True)
-        attrs.setdefault('help', 'Show the version and exit.')
-        attrs['callback'] = callback
-        return option(*(param_decls or ('--version',)), **attrs)(f)
-    return decorator
-
-
-def help_option(*param_decls, **attrs):
-    """Adds a ``--help`` option which immediately ends the program
-    printing out the help page.  This is usually unnecessary to add as
-    this is added by default to all commands unless suppressed.
-
-    Like :func:`version_option`, this is implemented as eager option that
-    prints in the callback and exits.
-
-    All arguments are forwarded to :func:`option`.
-    """
-    def decorator(f):
-        def callback(ctx, param, value):
-            if value and not ctx.resilient_parsing:
-                echo(ctx.get_help(), color=ctx.color)
-                ctx.exit()
-        attrs.setdefault('is_flag', True)
-        attrs.setdefault('expose_value', False)
-        attrs.setdefault('help', 'Show this message and exit.')
-        attrs.setdefault('is_eager', True)
-        attrs['callback'] = callback
-        return option(*(param_decls or ('--help',)), **attrs)(f)
-    return decorator
-
-
-# Circular dependencies between core and decorators
-from .core import Command, Group, Argument, Option