> > Also, I think has_key/in should return True if there is a default.
> It certainly seems desirable to see True where d[some_key] > doesn't raise an exception, but one could argue either way. Some things can be agreed by everyone: * if __contains__ always returns True, then it is a useless feature (since scripts containing a line such as "if k in dd" can always eliminate that line without affecting the algorithm). * if defaultdicts are supposed to be drop-in dict substitutes, then having __contains__ always return True will violate basic dict invariants: del d[some_key] assert some_key not in d Raymond _______________________________________________ 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
