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bpo-41543: contextlib.nullcontext can fill in for an async context manager (GH-21870)

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Co-authored-by: Andrew Svetlov <andrew.svetlov@gmail.com>
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Tom Gringauz 2020-11-09 14:34:07 +02:00 • committed by GitHub
parent 97e8b1eaea
commit a117167d8d
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4 changed files with 39 additions and 2 deletions
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8
Lib/contextlib.py
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@ -704,7 +704,7 @@ class AsyncExitStack(_BaseExitStack, AbstractAsyncContextManager):
return received_exc and suppressed_exc
class nullcontext(AbstractContextManager):
class nullcontext(AbstractContextManager, AbstractAsyncContextManager):
"""Context manager that does no additional processing.
Used as a stand-in for a normal context manager, when a particular
@ -723,3 +723,9 @@ class nullcontext(AbstractContextManager):
def __exit__(self, *excinfo):
pass
async def __aenter__(self):
return self.enter_result
async def __aexit__(self, *excinfo):
pass