On Sat, Jan 14, 2012 at 12:20:11AM +0530, Noufal Ibrahim wrote: > > len() method is just a shortcut to __len__ magic method .So when you > > call len() on your own container type ,it does not traverse whole > > sequence ,it just calls __len__ method and returns value(assume > > self.size=0 in constructor) from this method.This value incremented or > > decremented in add and remove method on your container type. > > This is an interesting point especially with Python3 returning something > other than lists for things like dict.keys. I'll dig into this a > little.
Yeah, dict view or in general the concept of memoryview, but they do have len(). -- Senthil _______________________________________________ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
