What this snippet does
Arguments and targets passed to Processes must be picklable; lambdas and local functions fail.
Expected output
AttributeError: Can't pickle local object
Why practise typing this
Typing concurrency 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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