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Issue #25609: Backport typing.ContextManager. 

This has no semantic impact as the class is guarded with a hasattr()
check; this is being done to keep typing.py in sync between Python 3.5
and 3.6 as requested by Guido.
This commit is contained in:
Brett Cannon 2016-04-15 10:51:30 -07:00
parent 3c149a6832
commit f3ad042bfb
1 changed files with 7 additions and 0 deletions
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7
Lib/typing.py
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@ -1,6 +1,7 @@
import abc import abc
from abc import abstractmethod, abstractproperty from abc import abstractmethod, abstractproperty
import collections import collections
import contextlib
import functools import functools
import re as stdlib_re # Avoid confusion with the re we export. import re as stdlib_re # Avoid confusion with the re we export.
import sys import sys
@ -1530,6 +1531,12 @@ class ValuesView(MappingView[VT_co], extra=collections_abc.ValuesView):
pass pass
if hasattr(contextlib, 'AbstractContextManager'):
class ContextManager(Generic[T_co], extra=contextlib.AbstractContextManager):
__slots__ = ()
__all__.append('ContextManager')
class Dict(dict, MutableMapping[KT, VT]): class Dict(dict, MutableMapping[KT, VT]):
def __new__(cls, *args, **kwds): def __new__(cls, *args, **kwds):