Static code analysis and corrections

backend/venv/lib/python3.6/site-packages/future/moves/builtins.py

@@ -0,0 +1,10 @@
+from __future__ import absolute_import
+from future.utils import PY3
+
+if PY3:
+    from builtins import *
+else:
+    __future_module__ = True
+    from __builtin__ import *
+    # Overwrite any old definitions with the equivalent future.builtins ones:
+    from future.builtins import *