Python

Missing Bool in Python

PythonObject-Oriented ProgrammingMagic Methodsintermediate

What this snippet does

If __bool__ is missing, Python falls back to __len__; 0 evaluates to False, non-zero to True.

Expected output

Falsy

Why practise typing this

Typing object-oriented programming code builds muscle memory for the symbols and indentation Python uses most, which prose-based typing tests never cover. DevType measures your words per minute and accuracy on this snippet and tracks the individual characters you mistype, so later lessons can target them.

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