[issue35868] Support ALL_PROXY environment variable in urllib

[Windson Yang]

Windson Yang <wiwindson at outlook.com> added the comment:

This is not a bug, it would be better to submit your ideas to python-ideas mail-list

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nosy: +Windson Yang

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue35868>
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