Serhiy Storchaka wrote: > 02.11.21 16:16, Petr Viktorin пише: > > As for \0, can we ban all ASCII & C1 control characters except > > whitespace? I see no place for them in source code.
> All control characters except CR, LF, TAB and FF are banned outside > comments and string literals. I think it is worth to ban them in > comments and string literals too. In string literals you can use > backslash-escape sequences, and comments should be human readable, there > are no reason to include control characters in them. If escape sequences were also allowed in comments (or at least in strings within comments), this would make sense. I don't like banning them otherwise, since odd characters are often a good reason to need a comment, but it is definitely a "mention, not use" situation. > > For homoglyphs/confusables, should there be a SyntaxWarning when an > > identifier looks like ASCII but isn't? > > It would virtually ban Cyrillic. There is a lot of Cyrillic letters > which look like Latin letters, and there are complete words written in > Cyrillic which by accident look like other words written in Latin. At the time, we considered it, and we also considered a narrower restriction on using multiple scripts in the same identifier, or at least the same identifier portion (so it was OK if separated by _). Simplicity won, in part because of existing practice in EMACS scripting, particularly with some Asian languages. > It is a work for linters, which can have many options for configuring > acceptable scripts, use spelling dictionaries and dictionaries of > homoglyphs, etc. It might be time for the documentation to mention a specific linter/configuration that does this. It also might be reasonable to do by default in IDLE or even the interactive shell. -jJ _______________________________________________ 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/BCZI6HCZJ34XABFFZETJMWFQWOUG4UB4/ Code of Conduct: http://python.org/psf/codeofconduct/
