[issue31471] assertion failure in subprocess.Popen() in case the env arg has a bad keys() method

[Oren Milman]

Changes by Oren Milman <orenmn at gmail.com>:


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keywords: +patch
pull_requests: +3570
stage: needs patch -> patch review

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue31471>
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