[Python-3000] Regular expressions, py3k and unicode

[Antoine Pitrou]

Nick Coghlan <ncoghlan <at> gmail.com> writes:
> > Would there be any reason (I do not know) to replace that with an 
> > re.ASCII flag to have the reverse effect (assuming there is not now)?
> 
> I'd be inclined to have it implied by the type of the argument - a str 
> argument implies re.UNICODE is set, a bytes or bytearray argument 
> implies it isn't. Users could still set it explicitly to have it apply 
> in the latter case.

Setting a hypothetical re.ASCII flag with a str pattern can have a sense, but
setting re.UNICODE with a bytes pattern doesn't have any (assuming we forbid
matching of bytes patterns with str objects and vice-versa).