[issue44633] Indexing the union type can return NotImplemented

[miss-islington]

Change by miss-islington <mariatta.wijaya+miss-islington at gmail.com>:


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nosy: +miss-islington
nosy_count: 4.0 -> 5.0
pull_requests: +25765
pull_request: https://github.com/python/cpython/pull/27224

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue44633>
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