[Python-Dev] Omission in re.sub?

MRAB python at mrabarnett.plus.com
Sun Dec 11 21:12:41 CET 2011

I've just come across an omission in re.sub which I hadn't noticed

In re.sub the replacement string can contain escape sequences, for

 >>> repr(re.sub(r"x", r"\n", "axb"))


 >>> repr(re.sub(r"x", r"\x0A", "axb"))

Yes, it doesn't recognise "\xNN".

Is there a reason for this?

The regex module does the same, but is there any objection to me fixing
it in the regex module? (I'm thinking about compatibility with re here.)

More information about the Python-Dev mailing list