Fix DeprecationWarning Exceptions when using mock in python 2.7 with -3 by rowillia · Pull Request #378 · testing-cabal/mock (original) (raw)

I am investigating a migration to Python 3, and to facilitate this we are using the -3 flag as decribed here: https://docs.python.org/3/howto/pyporting.html#prevent-compatibility-regressions . When using this flag I encountered
some issues inside of mock itself.

Python 3 now requires you to implement __hash__ if you implement __eq__. See https://docs.python.org/3.6/reference/datamodel.html#object.%5F%5Fhash%5F%5F .

{mock.ANY} # Fine in Python 2, Throws in Python 3

This PR explicitly sets the __hash__ method on these objects as None to ensure the behavior is consistent in Python 3 as well as Python 2.