What this snippet does
Type hints are erased at runtime; List[int] and List[str] are both just standard list objects.
Expected output
<class 'list'>
Why practise typing this
Typing advanced typing 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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