On Tue, 3/10/15, Antoon Pardon <antoon.par...@rece.vub.ac.be> wrote: Subject: Re: Letter class in re To: python-list@python.org Date: Tuesday, March 10, 2015, 9:35 AM Op 09-03-15 om 17:11 schreef Steven D'Aprano: > Antoon Pardon wrote: > >> I am using PLY for a parsing task which uses re for the lexical >> analysis. Does anyone >> know what regular expression to use for a sequence of letters? There is >> a class for alphanumerics but I can't find one for just letters, which I >> find odd. >> >> I am using python 3.4 > > The re module in Python is pretty old and basic. Can you use Matthew > Barnett's regex module, available on PyPI? I understand it has a richer set > of flags for things such as Unicode letters and the like. Not really. I could use regex to build a lexer but that would mean having to do a lot of extra work, since I couldn't use the abstraction that is offered by PLY.lex. PLY.yacc allows the use of a different lexer but PLY.lex doesn't allow the use of a different regular expression engine.
--> Perhaps you could use/abuse Pygments? http://pygments.org/docs/lexerdevelopment/ -- https://mail.python.org/mailman/listinfo/python-list
