Why is it called operator overloading and not overriding in Python? -

if want change behavior of inherited method, this:

class a:     def changeme():         print('called a')  class b(a):     def changeme():         print('called b') 

i believe example of overriding in python.

however, if want overload operator, similar:

class c:     anumber = 0     def __add__(self, operand):         print("words")         return self.anumber + operand.anumber  = c() b = c() a.anumber += 1 b.anumber += 2 print(a + b) # prints "words\n3" 

i thought maybe operator methods overridden in python since overload using optional parameters , call operator overloading out of convention.

but couldn't override, since '__add__' in object.__dict__.keys() false; method needs member of parent class in order overridden (and classes inherit object when created).

where gap in understanding?

overloading means 2 methods same name , different signatures + return types. overriding means 2 methods same name, wherein sub method has different functionality.the main difference between overloading , overriding in overloading can use same function name different parameters multiple times different tasks on class. , overriding means can use same name function name same parameters of base class in derived class. called re usability of code in program.