New submission from Vladimir Rutsky:
Return of @asyncio.coroutine-wrapped coroutine object from
@asyncio.coroutine-wrapped coroutine fails if asyncio debug is enabled.
Consider following example:
@asyncio.coroutine
def outer_coro():
@asyncio.coroutine
def inner_coro():
return 1
return g()
result = loop.run_until_complete(outer_coro())
If debug is disabled result will be 1, if debug is enabled, result will be
CoroWrapper object.
This issue is discussed on asyncio mailing list:
https://groups.google.com/forum/?fromgroups#!topic/python-tulip/YFfFxftxxDc
Complete example to reproduce this problem is here:
https://gist.github.com/rutsky/c72be2edeb1c8256d680
Attaching patch for Python 3.4 branch that fixes this issue and add test for
this bug.
This issue is not reproduced in Python 3.5, because CoroWrapper is awaitable in
Python 3.5 (and in Python 3.4 CoroWrapper is not future or generator).
----------
components: asyncio
files: fix_return_of_coro_from_coro.diff
keywords: patch
messages: 254799
nosy: gvanrossum, haypo, vrutsky, yselivanov
priority: normal
severity: normal
status: open
title: Return of asyncio.coroutine from asyncio.coroutine don't work in with
enabled debug
versions: Python 3.4
Added file: http://bugs.python.org/file41063/fix_return_of_coro_from_coro.diff
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<http://bugs.python.org/issue25647>
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