What this snippet does
Swallowing CancelledError without re-raising prevents the task from actually being cancelled.
Expected output
Swallowed Propagated
Why practise typing this
Typing advanced asyncio 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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