[issue41471] After installing python 3.x on Mac pip doesn't work at all

[Ronald Oussoren]

Ronald Oussoren <ronaldoussoren at mac.com> added the comment:

The error is due to invalid proxy settings on the system.

I can reproduce the error by enabling a HTTP proxy in system settings, while adding "172.19.0.0/40" to the proxy exclude list in the HTTP proxy settings.

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stage:  -> needs patch
versions: +Python 3.10, Python 3.9 -Python 3.8

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<https://bugs.python.org/issue41471>
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