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GH-100133: fix asyncio subprocess losing stderr and stdout output #100154

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Merged
kumaraditya303 merged 9 commits into from
Dec 21, 2022
Merged

GH-100133: fix asyncio subprocess losing stderr and stdout output #100154

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b980b7f
wip
kumaraditya303 Dec 10, 2022
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add comment & test
kumaraditya303 Dec 10, 2022
af1d4e6
fix comment
kumaraditya303 Dec 10, 2022
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📜🤖 Added by blurb_it.
blurb-it[bot] Dec 10, 2022
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use sys.executable
kumaraditya303 Dec 10, 2022
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Merge branch 'main' of https://github.com/python/cpython into fix-sub…
kumaraditya303 Dec 12, 2022
4a55951
fix news
kumaraditya303 Dec 12, 2022
6371452
fix import
kumaraditya303 Dec 12, 2022
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remove redundant code
kumaraditya303 Dec 12, 2022
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@kumaraditya303
kumaraditya303 committed Dec 10, 2022
commit 6b9d8c17cb1a1a948a819e7bf1aa73296f4a86cf
5 changes: 4 additions & 1 deletion Lib/asyncio/base_subprocess.py
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Expand Up @@ -215,8 +215,11 @@ def _process_exited(self, returncode):
# object. On Python 3.6, it is required to avoid a ResourceWarning.
self._proc.returncode = returncode
self._call(self._protocol.process_exited)
# See https://github.com/python/cpython/issues/100133
# The pipes should not be closed otherwise some data may be lost.
# https://github.com/python/cpython/issues/100133
# If the pipe is closed here then _UnixReadPipeTransport will remove the
# reader prematurely and the data will be lost, instead of doing that
# the pipe will be closed when the process is finished.
# for p in self._pipes.values():
# if p is not None:
# p.pipe.close()
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1 change: 1 addition & 0 deletions Lib/test/test_asyncio/test_subprocess.py
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Expand Up @@ -687,6 +687,7 @@ async def execute():
self.assertIsNone(self.loop.run_until_complete(execute()))

def test_subprocess_output_stdout(self):
# See https://github.com/python/cpython/issues/100133
async def get_command_stdout(cmd, *args):
proc = await asyncio.create_subprocess_exec(
cmd, *args, stdout=asyncio.subprocess.PIPE,
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