[issue45235] argparse does not preserve namespace with subparser defaults

[Frost Ming]

Change by Frost Ming <mianghong at gmail.com>:


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nosy: +Frost Ming
nosy_count: 10.0 -> 11.0
pull_requests: +27818
pull_request: https://github.com/python/cpython/pull/29574

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