[issue29679] Add @contextlib.asynccontextmanager

[Jelle Zijlstra]

New submission from Jelle Zijlstra:

An async equivalent of @contextmanager would be an obvious use case for async generators and the async with statement. In my own code, I have several async context objects that could have been written more concisely if @asynccontextmanager was available.

I'll be working on a PR to implement this.

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components: Library (Lib)
messages: 288729
nosy: Jelle Zijlstra
priority: normal
severity: normal
status: open
title: Add @contextlib.asynccontextmanager
versions: Python 3.7

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue29679>
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