What this snippet does
reversed returns an iterator and doesn't allocate a new list, while [::-1] creates a copy.
Expected output
[4, 3, 2, 1]
Why practise typing this
Typing iteration (advanced) 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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