[3.7] bpo-34044: subprocess.Popen copies startupinfo (GH-8090) #8121
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subprocess.Popen now copies the startupinfo argument to leave it unchanged: it will modify the copy, so that the same STARTUPINFO object can be used multiple times. Add subprocess.STARTUPINFO._copy() private method. Python 3.7 backport from master makes the copy() private: renamed to _copy(). (cherry picked from commit 483422f)
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subprocess.Popen now copies the startupinfo argument to leave it
unchanged: it will modify the copy, so that the same STARTUPINFO
object can be used multiple times.
Add subprocess.STARTUPINFO._copy() private method.
Python 3.7 backport from master makes the copy() private: renamed to
_copy().
(cherry picked from commit 483422f)
https://bugs.python.org/issue34044