[issue40807] CODEOP: Show warnings once during _maybe_compile

[Cheryl Sabella]

Change by Cheryl Sabella <cheryl.sabella at gmail.com>:


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keywords: +patch
pull_requests: +19735
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/20486

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue40807>
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