[issue44589] Pattern Matching - duplicate keys in mapping patterns

[Jack DeVries]

Change by Jack DeVries <jdevries3133 at gmail.com>:


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keywords: +patch
nosy: +jack__d
nosy_count: 3.0 -> 4.0
pull_requests: +25674
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/27131

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue44589>
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