What this snippet does
A decorator factory (@deco()) requires three levels of nesting, whereas a normal decorator (@deco) requires two.
Expected output
Must match nesting levels
Why practise typing this
Typing decorators (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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