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whatsnew: collections no longer implicitly imports 'abc' (#20784).

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R David Murray 2014-03-13 12:00:17 -04:00
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commit d73721a7e4
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Doc/whatsnew/3.4.rst
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@ -2436,6 +2436,13 @@ Changes in the Python API
have things that look like doctests in them you may see test failures you've
never seen before when running your tests (:issue:`3158`).
* The :mod:`collections.abc` module has been slightly refactored as
part of the Python startup improvements. As a consequence of this, it is no
longer the case that importing :mod:`collections` automatically imports
:mod:`collections.abc`. If your program depended on the (undocumented)
implicit import, you will need to add an explicit ``import collections.abc``
(:issue:`20784`).
Changes in the C API
--------------------