On Friday, October 14, 2016 at 12:50:44 PM UTC-4, Lele Gaifax wrote: > Chris Angelico <ros...@gmail.com> writes: > > > There's a shift as of 3.6 to make unrecognized alphabetic escapes into > > errors, or at least warnings. > > But we are talking about raw strings here, specifically r'\s+'. > > I agree that with plain strings it's a plus.
The raw string means the regex engine gets three characters: backslash, s, plus. It then has to decide what backslash-s means. In 3.6, this is an error. You'll need to escape the backslash for the regex engine: >>> re.sub(r'\s+', r'\\s+', 'foo bar') 'foo\\s+bar' --Ned. -- https://mail.python.org/mailman/listinfo/python-list