----- Original Message ----- From: "Avi Kak" <[EMAIL PROTECTED]> Newsgroups: comp.lang.python To: <python-list@python.org> Sent: Sunday, July 16, 2006 11:05 PM Subject: embedding executable code in a regular expression in Python
> Folks, > > Does regular expression processing in Python allow for executable > code to be embedded inside a regular expression? > > For example, in Perl the following two statements > > $regex = qr/hello(?{print "saw hello\n"})mello(?{print "saw > mello\n"})/; > "jellohellomello" =~ /$regex/; > > will produce the output > > saw hello > saw mello > > Is it possible to do the same in Python with any modules that come > with the standard distribution, or with any other modules? > > Thanks in advance for any help, > > Avi Kak ([EMAIL PROTECTED]) > > -- > http://mail.python.org/mailman/listinfo/python-list There's a new module out that can do it like this: import SE Stream_Editor = SE.SE ('<EAT> "~[hm]ello~=print \'saw =\'\n" ') for line in Stream_Editor ('yellomellojellohello').split ('\n'): exec ("%s" % line) saw mello saw hello You'll find SE in the Cheese Shop. It has been commented favorably. I wouldn't comment it, because I wrote it. Regards Frederic -- http://mail.python.org/mailman/listinfo/python-list