Gora Mohanty <g...@mimirtech.com> writes:
[...] > It is not clear what you want from your description. To check if a > list is empty, see if len( list ) is zero. [...] You don't want to do that. Your "list" might be a generator (unless you check for type which is a bad idea anyway) and "len"ing that will consume it which might be a potentially expensive operation. Truth testing in general is implemted using the __nonzero__ magic method[1]. Lists don't have a __nonzero__ so the truth value is determined using the length (as you've said) but manually doing it on something that you don't know the type of is not usually a good idea. Footnotes: [1] http://docs.python.org/reference/datamodel.html#object.__nonzero__ -- ~noufal http://nibrahim.net.in May I ask a question? _______________________________________________ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
