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Concatenate two strings using Operator Overloading in Python

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  • Difficulty Level : Hard
  • Last Updated : 10 Jul, 2020

Operator Overloading refers to using the same operator to perform different tasks by passing different types of data as arguments. To understand how ‘+’ operator works in two different ways in python let us take the following example

Python3




# taking two numbers
a = 2
b = 3
  
# using '+' operator add them
c = a+b
  
# printing the result
print("The sum of these two numbers is ", c)

Output:

The sum of these two numbers is  5

In this example we used ‘+’ operator to add numbers, now let us take one more example to understand how ‘+’ operator is used to concatenate strings.

Python3




# taking two strings from the user
a = 'abc'
b = 'def'
  
# using '+' operator concatenate them
c = a+b
  
# printing the result
print("After Concatenation the string becomes", c)

Output:

After Concatenation the string becomes abcdef

For a better understanding of operator overloading, here is an example where a common method is used for both purposes.

Python3




# let us define a class with add method
class operatoroverloading:
    
    def add(self, a, b):
        self.c = a+b
        return self.c
  
  
# creating an object of class
obj = operatoroverloading()
  
# using add method by passing integers
# as argument
result = obj.add(23, 9)
print("sum is", result)
  
# using same add method by passing strings
# as argument
result = obj.add("23", "9")
print("Concatenated string is", result)

Output:

sum is 32
Concatenated string is 239

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