[issue39395] The os module should unset() environment variable at exit

[Eric Snow]

Eric Snow <ericsnowcurrently at gmail.com> added the comment:

FTR, #39376 is related (avoid the process-global env vars in the first place).

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nosy: +eric.snow

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39395>
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