On 22 November 2017 at 15:56, Yury Selivanov <[email protected]> wrote: > For synchronous generator expression: > > r = (f(i) for i in range(3)) > > is really: > > def _(): > for i in range(3): > yield f(i) > r = _() > > For an asynchronous generator expression: > > r = (await f(i) for i in range(3)) > > is equivalent to: > > def _(): > for i in range(3): > yield (await f(i)) > r = _()
Wait, I missed this on first reading. The note in the docs for generator expressions defining asynchronous generator expressions is *incredibly* easy to miss, and doesn't say anything about the semantics (the expansion you quote above) being different for the two cases. This definitely needs clarifying in the docs. Paul _______________________________________________ Python-Dev mailing list [email protected] https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com