We've already had all of this since long before typing.py existed. ALLCAPS means "this value should only be set once and not changed."
_underscore means "this is not part of public API, and it may change in next version. __double_under means "this is SERIOUSLY not something you should muck with, it's likely to break stuff if you do." Python should never become a B&D language like Java. If a user violates the contracts provided by code they utilize, that's on them, not on the language. On Tue, May 25, 2021, 11:28 AM Stestagg <stest...@gmail.com> wrote: > > > On Tue, May 25, 2021 at 4:02 PM Ethan Furman <et...@stoneleaf.us> wrote: > >> On 5/25/21 5:23 AM, Chris Angelico wrote: >> > On Tue, May 25, 2021 at 9:55 PM Shreyan Avigyan wrote: >> >> >> The proposed syntax is as follows, >> >> >> >> constant x = 10 >> >> constant y = ["List"] >> >> constant z: str = "Hi" >> > >> > https://docs.pytcorehon.org/3/library/typing.html#typing.Final >> <https://docs.python.org/3/library/typing.html#typing.Final> >> > >> > Already exists :) >> >> Optional typing != core Python. >> >> > I mean, it's part of the standard library, so we could argue on personal > definitions of 'core Python', but it would be more useful to work out > exactly what aspects of typing.Final are lacking for you. > > Why would this constant annotation need to be more strongly enforced than > type checks? What actual benefit would this provide? > > Steve > > > -- >> ~Ethan~ >> _______________________________________________ >> 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/NZUWNBFWI5ESOW6CVMQA7CZTRNFVJJLA/ >> Code of Conduct: http://python.org/psf/codeofconduct/ >> > _______________________________________________ > 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/2G2NFUN453R4DGVGOYYAZJQYBGQ2OC2A/ > Code of Conduct: http://python.org/psf/codeofconduct/ >
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