[issue39857] subprocess.run: add an extra_env kwarg to complement existing env kwarg

[Caleb Hattingh]

Caleb Hattingh <caleb.hattingh at gmail.com> added the comment:

dict syntax tools make it fairy easy to compose new dicts from old ones with overrides:

    subprocess.run(..., env={**os.environ, 'FOO': ..., 'BAR', ...}, ...)

Would this be sufficient to avoid the copy/pasting boilerplate?

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nosy: +cjrh

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39857>
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