What this snippet does
__missing__ is only called for explicit key access (d['x']); dict.get() bypasses it and returns None.
Expected output
None
Why practise typing this
Typing magic methods (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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