>>> import re
>>> r = re.compile('(a|b*)+')
Traceback (most recent call last):
File "", line 1, in ?
File "c:\python24\lib\sre.py", line 180, in compile
return _compile(pattern, flags)
File "c:\python24\lib\sre.py", line 227, in _compile
raise error, v # invalid expression
sre_constan
Fredrik wrote:
> your definition of "equivalent" is a bit unusual:
>
> >>> re.match("(a|b*c*)+", "abc").groups()
> ('',)
> >>> re.match("(a|b)*", "abc").groups()
> ('b',)
> >>> re.match("(a|b|c)*", "abc").groups()
> ('c',)
>
> that you don't get an error for
>
> >>> r = re.compile('(a|b*c*)+')
>
