Python 3K or Python 2.9?

[Delaney, Timothy (Tim)]

Ben Finney wrote:

> The latter two statements are equivalent. The 'instance.method(args)'
> syntax is just sugar for 'Class.method(instance, args)'.

Only in the case that "instance" is an instance of "Class", and not an
instance of a subclass of "Class". For example, the following are not
equivalent:

class A(object):
    def func(self):
        print 'A'

class B(A):
    def func(self):
        super(B, self).func()
        print 'B'

a = A()
b = B()

A.func(a)
A.func(b)
B.func(b)
a.func()
b.func()

Tim Delaney