[issue45235] argparse does not preserve namespace with subparser defaults

[Guido van Rossum]

Guido van Rossum <guido at python.org> added the comment:

This has caused a regression, also reported here:
https://github.com/Azure/azure-cli/issues/20269 Global Arguments stop working in Python 3.9.8

Can we please get some attention from @rhettinger and @ambv?

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nosy: +gvanrossum

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue45235>
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