[openstack-dev] Mock and the stdlib

Davanum Srinivas davanum at gmail.com
Thu Feb 11 03:37:03 UTC 2016

I've fast tracked the revert - https://review.openstack.org/#/c/278814/

On Wed, Feb 10, 2016 at 9:38 PM, Robert Collins
<robertc at robertcollins.net> wrote:
> We've just had a mass gate breakage due to
> https://review.openstack.org/#/c/268945/ go through, so I thought I'd
> try to get ahead of anyone trying this again.
> unittest.mock in the stdlib is not static, it evolves over time. We're
> currently writing to - and depending on - the unittest.mock version
> approximately == that in python 3.5. Until we have that as our minimum
> python version - no 2.7 - we can't just use 'unittest.mock'.
> 'mock', the original code that became unittest.mock, is still
> maintained. Its a rolling backport of the features that land in
> Python's stdlib, which lets us use newer features on older pythons. So
> - until the hypothetical date where our minimum Python version is
> newer than the oldest capability we need from unittest.mock, we're
> going to be using 'mock', not 'unittest.mock'.
> -> noone should be importing 'unittest.mock', and 'mock' is the
> dependency, not conditional on any given version of Python.
> I'm sorry I didn't spot 268945 going through, or I would have -2'd it :(.
> -Rob
> --
> Robert Collins <rbtcollins at hpe.com>
> Distinguished Technologist
> HP Converged Cloud
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Davanum Srinivas :: https://twitter.com/dims

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