[New-bugs-announce] [issue24316] Fix types.coroutine to accept objects from Cython

[Yury Selivanov]

New submission from Yury Selivanov:

Stefan,

This patch should solve the problem with types.coroutine accepting only pure python generator functions.

The approach is, however, slightly different from what you've proposed.  Instead of having a wrapper class (delegating .throw, .send etc to a wrapped object), we now simply check if the returned value of the wrapped function is an instance of collections.abc.Coroutine.  Issue 24315 enables duck typing for coroutines, so if a cython-based coroutine implements all coroutine abstract methods, it will automatically pass types.coroutine.

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assignee: yselivanov
components: Library (Lib)
files: coroutine.patch
keywords: patch
messages: 244315
nosy: gvanrossum, ncoghlan, scoder, yselivanov
priority: normal
severity: normal
stage: patch review
status: open
title: Fix types.coroutine to accept objects from Cython
versions: Python 3.5, Python 3.6
Added file: http://bugs.python.org/file39536/coroutine.patch

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<http://bugs.python.org/issue24316>
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