Okay Just when I think I am getting it you throw this in. So why does a become local to each variable but b seem global?
Michael bob gailer wrote: > Michael wrote: >> Hi Michael >> >> Thanks for the quick reply, I think I get it. So becuase I did not >> declare them withing the init method using self they are shared by >> every object that is created, even completely brand new ones? >> >> Is it normal practice to declare your variables in a class? I notice >> that you don't have to, you can create them as you go, but i thought >> declaring and initialising them in the class would make it easier to >> understand and see what the class is for and should contain. > And now for the rest of the story: > > class Foo: > a = 0 > b = [] > > f = Foo() > f.a = 3 > f.b.append(1) > > g = Foo() > g.a = 4 > g.b.append(2) > > print f.a, g.a # 3 4 > print f.b, g.b # [1, 2] [1, 2] > > [snip] > _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
