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Why Python's `is` Keyword Will Betray You If You Trust It for Equality
Python 新手常犯的「is」与「==」混淆陷阱,详解整数缓存与 PEP 8 规范,避免 bug 从理解开始。
This is one of the most commonly misused Python features and it fails silently, which makes it especially dangerous in production code. a = " hello " …