[issue44792] Improve syntax errors for invalid if expressions

[Miguel Brito]

Change by Miguel Brito <miguel.mdebrito at gmail.com>:


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keywords: +patch
pull_requests: +26020
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/27506

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue44792>
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