bpo-25988: Deprecate exposing collections.abc in collections GH-5414
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@ -35,8 +35,8 @@ Python's general purpose built-in containers, :class:`dict`, :class:`list`,
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.. versionchanged:: 3.3
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Moved :ref:`collections-abstract-base-classes` to the :mod:`collections.abc` module.
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For backwards compatibility, they continue to be visible in this module
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as well.
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For backwards compatibility, they continue to be visible in this module through
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Python 3.7. Subsequently, they will be removed entirely.
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:class:`ChainMap` objects
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@ -880,6 +880,11 @@ Other CPython Implementation Changes
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Deprecated
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==========
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* In Python 3.8, the abstract base classes in :mod:`collections.abc` will no
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longer be exposed in the regular :mod:`collections` module. This will help
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create a clearer distinction between the concrete classes and the abstract
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base classes.
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* Yield expressions (both ``yield`` and ``yield from`` clauses) are now deprecated
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in comprehensions and generator expressions (aside from the iterable expression
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in the leftmost :keyword:`for` clause). This ensures that comprehensions
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@ -18,10 +18,14 @@ __all__ = ['deque', 'defaultdict', 'namedtuple', 'UserDict', 'UserList',
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'UserString', 'Counter', 'OrderedDict', 'ChainMap']
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# For backwards compatibility, continue to make the collections ABCs
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# available through the collections module.
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from _collections_abc import *
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# through Python 3.6 available through the collections module.
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# Note, no new collections ABCs were added in Python 3.7
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import _collections_abc
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__all__ += _collections_abc.__all__
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from _collections_abc import (AsyncGenerator, AsyncIterable, AsyncIterator,
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Awaitable, ByteString, Callable, Collection, Container, Coroutine,
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Generator, Hashable, ItemsView, Iterable, Iterator, KeysView, Mapping,
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MappingView, MutableMapping, MutableSequence, MutableSet, Reversible,
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Sequence, Set, Sized, ValuesView)
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from operator import itemgetter as _itemgetter, eq as _eq
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from keyword import iskeyword as _iskeyword
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@ -0,0 +1,2 @@
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Deprecate exposing the contents of collections.abc in the regular
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collections module.
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