Hello, On Mon, 18 May 2020 02:39:27 +0100 MRAB <pyt...@mrabarnett.plus.com> wrote:
[] > > Or maybe we could leverage the new walrus operator and write > > > > str := (int) > > > It would be closer to the existing annotation if we could write: > > [int] -> str To make it clear, the talk is about "better", not "existing" annotation syntax, which is a square (literally) peg in a round hole. With PEP 0563, there's totally no need to wrap everything in square brackets, and atrocities like __class_getitem__ can be treated like an implementation detail of a particular Python implementation (CPython, that is). With PEP 0563, while evaluating annotations, one can just pass to eval() a suitably constructed "globals" dict, to enable any operators on any symbols (which would be represented by objects, not classes), or just operate on AST with even finer level of control. -- Best regards, Paul mailto:pmis...@gmail.com _______________________________________________ Python-ideas mailing list -- python-ideas@python.org To unsubscribe send an email to python-ideas-le...@python.org https://mail.python.org/mailman3/lists/python-ideas.python.org/ Message archived at https://mail.python.org/archives/list/python-ideas@python.org/message/DOUR5EK2WYSNE7TUNFJ6DQTPWQMASDUL/ Code of Conduct: http://python.org/psf/codeofconduct/
