On Mar, Feb 10, 2009 06:24 PM, Daniel Stutzbach wrote: > On Tue, Feb 10, 2009 at 11:16 AM, Steve Holden <st...@holdenweb.com> > wrote: > >> That's true, but the same *could* be said about the existing >> optimizations for objects that define their own __contains__. >> > > No, because there isn't a __not_contains__, so you cannot define the > inverse > operation differently. "not a in b" and "a not in b" have exactly the > same > effects. >
Interesting. So at least for "is" and "in" operators it is possible to play with the "not" operator. Thanks Cesare _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
