PEP 515: Non-empty return statement
Per PEP 515:
It is a SyntaxError to have a non-empty return statement in an asynchronous generator.
Synchronus generators can return values that include it in the StopIteration exception. Why would a return value in an asynchronous generator not do the same in the StopAsyncIteration?
It was decided to leave out 'yield from' support for async generators, at least for now, due to the implementation complexity. And non-empty returns in generators are only intended for use with 'yield from', so they got left out as well. On Mon, Aug 24, 2020 at 4:48 PM Paul Bryan <pbryan@anode.ca> wrote:
Per PEP 515:
It is a SyntaxError to have a non-empty return statement in an asynchronous generator.
Synchronus generators can return values that include it in the StopIteration exception. Why would a return value in an asynchronous generator not do the same in the StopAsyncIteration?
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I bet you meant PEP 525. PEP 515 is underscores in numeric literals. And... I thought an empty "return" was equivalent to "return None"? //arry/ On 8/24/20 4:20 PM, Paul Bryan wrote:
Per PEP 515:
It is aSyntaxErrorto have a non-emptyreturnstatement in an asynchronous generator.
Synchronus generators can return values that include it in the StopIteration exception. Why would a return value in an asynchronous generator not do the same in the StopAsyncIteration?
_______________________________________________ Python-Dev mailing list -- python-dev@python.org To unsubscribe send an email to python-dev-leave@python.org https://mail.python.org/mailman3/lists/python-dev.python.org/ Message archived at https://mail.python.org/archives/list/python-dev@python.org/message/IYF6QKMN... Code of Conduct: http://python.org/psf/codeofconduct/
participants (3)
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Larry Hastings -
Nathaniel Smith -
Paul Bryan