[issue43755] lambda expression no longer valid at comp_if in Python 3.9

[Saiyang Gou]

Change by Saiyang Gou <gousaiyang223 at gmail.com>:


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keywords: +patch
pull_requests: +23968
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/25231

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue43755>
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