How do I get the possible "self attributes" of a Python class? -

for example how can define properties of class object in python? how can define happens when add 2 objects? or multiply them? or divide them? or print them? or if call 1 number of arguments?

i see things __mul__ , __add__ these called , rest?

this called operator overloading.

class human(object):     def __init__(self, name):         self.name = name      def __add__(self, other):         return '{0} {1}'.format(self.name, other.name)      def __mul__(self, other):         return self.name * len(other.name)      def __str__(self):         return self.name  bob = human('bob') sam = human('sam')  print sam + bob # calls __add__ print sam * bob # calls __mul__  print bob # calls __str__