Le Sunday 24 August 2008 10:32:34 Hussein B, vous avez écrit : > Hi, > I'm familiar with static method concept, but what is the class method? > how it does differ from static method? when to use it? > -- > class M: > def method(cls, x): > pass > > method = classmethod(method)
As it has been said, it adds polymorphic behavior to static method concept by the mean of a reference to the real class that called it. >>>[159]: class A(object) : .....: @classmethod .....: def factory(cls, *args) : return cls(*args) .....: .....: >>>[160]: class B(A) : .....: def __init__(self, a, b) : .....: print a, b .....: .....: >>>[161]: A.factory() ...[161]: <__main__.A object at 0x2b88d0e33710> >>>[162]: B.factory(1, 2) 1 2 ...[162]: <__main__.B object at 0x2b88d0e33bd0> It is a common advice that staticmethod should not exist in python, as they do nothing compared to module level functions, and we should always use classmethods in place of them. > -- > Thank you for your time. > -- > http://mail.python.org/mailman/listinfo/python-list -- _____________ Maric Michaud -- http://mail.python.org/mailman/listinfo/python-list
