Python Operator Overloading

In this tutorial you will learn, common operator overloading methods in Python.

The operator overloading assign new functionality to existing operators so that they do what you want. Operator overloading lets objects coded with classes intercept and respond to operations that work on built-in types: addition, subtraction, multiplication, slicing, comparision and so on.

Using this special method, you will be able to change the built-in behavior of the operator such as: +, -, /, or *. This special method is surrounded by double underscores (__).

Example of Operator Overloading

Example

import math
 
class Circle:
 
    def __init__(self, radius):
        self.radius = radius
 
    def get_result(self):
        return self.radius
 
    def area(self):
        return math.pi * self.radius ** 2
 
    def __add__(self, another_circle):
        return Circle(self.radius + another_circle.radius)
 
    def __sub__(self, another_circle):
        return Circle(self.radius - another_circle.radius)
 
    def __mul__(self, another_circle):
        return Circle(self.radius * another_circle.radius)
 
    def __gt__(self, another_circle):
        return Circle(self.radius > another_circle.radius)
 
    def __lt__(self, another_circle):
        return Circle(self.radius < another_circle.radius)
 
    def __ge__(self, another_circle):
        return Circle(self.radius >= another_circle.radius)
 
    def __le__(self, another_circle):
        return Circle(self.radius <= another_circle.radius)
 
    def __eq__(self, another_circle):
        return Circle(self.radius == another_circle.radius)
 
    def __ne__(self, another_circle):
        return Circle(self.radius != another_circle.radius)
 
 
c1 = Circle(10)
print(c1.get_result())
print(c1.area())
 
c2 = Circle(15)
print(c2.get_result())
print(c1.area())
 
c3 = c1 + c2
print(c3.get_result())
 
c3 = c2 - c1
print(c3.get_result())
 
c4 = c1 * c2
print(c4.get_result())
 
c5 = c1 < c2
print(c5.get_result())
 
c5 = c2 < c1
print(c5.get_result())

Python Programming

Python Operator Overloading

Example of Operator Overloading