On Thu, 26 Jul 2007 03:07:56 +0000, james_027 wrote: > hi, > > is cls & self the same thing? > > I have seen something like > > class A: > def dosomething(cls): > #doing something > > How is cls & self differ? How is it use? > > Thanks > james
First, you have to understand that the choice of this name is *completely arbitrary*. You could call it self, cls, this, bogus, helloworld or whatsoever. The important thing is just: The first argument is (by default) the instance. Amongst python developers, many things aren't enforced by the language (eg. implicit `this` referencing the instance, as in other languages) but by conventions. It's just way more convenient to call it `self` always. We call it `cls` when speaking about classmethods. Your method there might have been headed by a line containing [EMAIL PROTECTED] See http://docs.python.org/lib/built-in-funcs.html#l2h-16 for classmethod and http://docs.python.org/tut/node11.html#SECTION0011400000000000000000 for this conventional stuff (paragraph "Often, the first argument ..."). HTH, Stargaming -- http://mail.python.org/mailman/listinfo/python-list
