Python

StopIteration in Python

PythonIterators & GeneratorsIterator Protocolintermediate

What this snippet does

Calling next() on an exhausted iterator raises StopIteration.

Expected output

StopIteration

Why practise typing this

Typing iterators & generators 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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