[New-bugs-announce] [issue28926] subprocess.Popen + Sqlalchemy doesn't wait for process

Steven report at bugs.python.org
Fri Dec 9 15:55:37 EST 2016


New submission from Steven:

Called subprocess.Popen("python_file.py", shell=True).wait(), which triggered a call to `Base.metadata.create_all(engine)` inside `python_file.py`

This caused nothing after the `create_all(engine)` call to execute in `python_file.py` But, if I changed `subprocess.Popen` to `subprocess.check_call("python_file", shell=True).wait()`, the desired behavior was achieved.

I was able to continue past `create_all(engine)` if there was an error in the parent script after the subprocess call. In this case, then `python_file.py` was able to execute fully as expected.

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components: Library (Lib)
messages: 282804
nosy: s1113950
priority: normal
severity: normal
status: open
title: subprocess.Popen + Sqlalchemy doesn't wait for process
type: behavior
versions: Python 2.7

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue28926>
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