Much Ado About None: Sentinel Values in Python
Why None is often the wrong way to express absence in Python, how sentinel values fill the gap, and how PEP 661 finally made them first-class citizens in Python 3.15.
more ...Why None is often the wrong way to express absence in Python, how sentinel values fill the gap, and how PEP 661 finally made them first-class citizens in Python 3.15.
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