On Sat, May 28, 2022 at 12:55 PM Guido van Rossum <gu...@python.org> wrote:
> > On Sat, May 28, 2022 at 12:11 MRAB > > Names in Python are case-sensitive, yet the string prefixes are >> case-/insensitive/. >> >> Why? > > > IIRC we copied this from C for numeric suffixes (0l and 0L are the same; > also hex digits and presumably 0XA == 0xa) and then copied that for string > prefixes without thinking about it much. I guess it’s too late to change. > Given that 99.99% of code uses lower case string prefixes we *could* change it, it'd just take a longer deprecation cycle - you'd probably want a few releases where the upper case prefixes become an error in files without a `from __future__ import case_sensitive_quote_prefixes` rather than jumping straight from parse time DeprecationWarning to repurposing the uppercase to have a new meaning. The inertia behind doing that over the course of 5+ years is high. Implying that we'd need a compelling reason to orchestrate it. None has sprung up. -gps > —Guido > -- > --Guido (mobile) > _______________________________________________ > Python-Dev mailing list -- python-dev@python.org > To unsubscribe send an email to python-dev-le...@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/27HLMPDURSAN2YCTFWN6LETWQNY4POX7/ > Code of Conduct: http://python.org/psf/codeofconduct/ >
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