Leon Hampton <leon_hamp...@yahoo.com> added the comment:
Hello, There may be a bug in the implementation of the Conditional Construction of Regular Expressions, namely the (?(id/name)yes-pattern|no-pattern). In the Regular Expression documentation (https://docs.python.org/3.7/library/re.html), in the portion about the Conditional Construct, it gives this sample pattern '(<)?(\w+@\w+(?:\.\w+)+)(?(1)>|$)' and states that the pattern WILL NOT MATCH this string '<u...@host.com'. In my tests the pattern MATCHES the string. I agree that the pattern should not match. Respectfully, Leon ---------- components: +Regular Expressions -Documentation nosy: +ezio.melotti, mrabarnett title: Poor RegEx example for (?(id/name)yes-pattern|no-pattern) -> RegExp Conditional Construct (?(id/name)yes-pattern|no-pattern) Problem _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue40043> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
