How does polymorphism work in Python?

Question

I\'m new to Python... and coming from a mostly Java background, if that accounts for anything.

I\'m trying to understand polymorphism in Python. Maybe the problem is

Answer 1

just nice example how it is possible to use same field of 2 totally different classes. It is more close to template.

class A:
    def __init__(self, arg = "3"):
        self.f = arg
a = A()
a.f # prints 3
class B:
    def __init__(self, arg = "5"):
        self.f = arg
b = B()
b.f # prints 5


def modify_if_different(s,t, field):
    if s.__dict__[field] != t.__dict__[field]:
        t.__dict__[field]  = s.__dict__[field]
    else:
        s.__dict__[field]  = None

modify_if_different(a,b,"f")
b.f # prints 3
a.f # prints 3