bpo-41696: Fix handling of debug mode in asyncio.run (#22069)

* bpo-41696: Fix handling of debug mode in asyncio.run

This allows PYTHONASYNCIODEBUG or -X dev to enable asyncio debug mode
when using asyncio.run

* 📜🤖 Added by blurb_it.

Co-authored-by: hauntsaninja <>
Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
This commit is contained in:
Shantanu 2020-09-02 21:54:46 -07:00 committed by GitHub
parent 4a97b1517a
commit 0770ad948c
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3 changed files with 7 additions and 2 deletions

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@ -5,7 +5,7 @@ from . import events
from . import tasks
def run(main, *, debug=False):
def run(main, *, debug=None):
"""Execute the coroutine and return the result.
This function runs the passed coroutine, taking care of
@ -39,7 +39,8 @@ def run(main, *, debug=False):
loop = events.new_event_loop()
try:
events.set_event_loop(loop)
loop.set_debug(debug)
if debug is not None:
loop.set_debug(debug)
return loop.run_until_complete(main)
finally:
try:

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@ -87,6 +87,9 @@ class RunTests(BaseTest):
asyncio.run(main(False))
asyncio.run(main(True), debug=True)
with mock.patch('asyncio.coroutines._is_debug_mode', lambda: True):
asyncio.run(main(True))
asyncio.run(main(False), debug=False)
def test_asyncio_run_from_running_loop(self):
async def main():

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@ -0,0 +1 @@
Fix handling of debug mode in :func:`asyncio.run`. This allows setting ``PYTHONASYNCIODEBUG`` or ``-X dev`` to enable asyncio debug mode when using :func:`asyncio.run`.