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Unverified50% confidenceFactExact time

PEP 661 由 Tal Einat 于 2021 年首次提出

1
Sources
50%
Confidence
Long-term
Relevance
8/13/2026
First Seen

Sources

Python 3.15 Sentinel Objects Explained: How PEP 661 Solves the None Ambiguity Problem

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