On Wed, May 26, 2021 at 1:38 PM Shreyan Avigyan <pythonshreya...@gmail.com> wrote:
> Reply to Stestagg: > > That's annotation to make sure no one uses a name. No. > This is a proposal to implement constant name binding in Python. Here are some excerpts from pep 591, specifically, how are they different from what you are proposing? [typing.Final purpose] "Declaring that a variable or attribute should not be reassigned" and " The two main rules for defining a final name are: - There can be *at most one* final declaration per module or class for a given attribute. There can't be separate class-level and instance-level constants with the same name. - There must be *exactly one* assignment to a final name. " and [typing.Final is useful in...]"Allowing a name to be used in situations where ordinarily a literal is expected (for example as a field name for NamedTuple, a tuple of types passed to isinstance, or an argument to a function with arguments of Literal type [3] <https://www.python.org/dev/peps/pep-0591/#pep-586>)." > There are many applications of constants. > However many there may be, the cases discussed here all fall under this definition > _______________________________________________ > 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/DDDMEDIXHMYLTZP7TJHWC5ECDJRF4CWU/ > Code of Conduct: http://python.org/psf/codeofconduct/ >
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