demo + utils venv

utils/venv/lib/python3.6/site-packages/pandas/tests/computation/test_compat.py

@@ -0,0 +1,47 @@
+from distutils.version import LooseVersion
+
+import pytest
+
+import pandas as pd
+from pandas.core.computation.check import _MIN_NUMEXPR_VERSION
+from pandas.core.computation.engines import _engines
+import pandas.core.computation.expr as expr
+
+
+def test_compat():
+    # test we have compat with our version of nu
+
+    from pandas.core.computation.check import _NUMEXPR_INSTALLED
+    try:
+        import numexpr as ne
+        ver = ne.__version__
+        if LooseVersion(ver) < LooseVersion(_MIN_NUMEXPR_VERSION):
+            assert not _NUMEXPR_INSTALLED
+        else:
+            assert _NUMEXPR_INSTALLED
+    except ImportError:
+        pytest.skip("not testing numexpr version compat")
+
+
+@pytest.mark.parametrize('engine', _engines)
+@pytest.mark.parametrize('parser', expr._parsers)
+def test_invalid_numexpr_version(engine, parser):
+    def testit():
+        a, b = 1, 2  # noqa
+        res = pd.eval('a + b', engine=engine, parser=parser)
+        assert res == 3
+
+    if engine == 'numexpr':
+        try:
+            import numexpr as ne
+        except ImportError:
+            pytest.skip("no numexpr")
+        else:
+            if (LooseVersion(ne.__version__) <
+                    LooseVersion(_MIN_NUMEXPR_VERSION)):
+                with pytest.raises(ImportError):
+                    testit()
+            else:
+                testit()
+    else:
+        testit()