Python Tutorial

Return a copy of the string with all occurrences of substring old replaced by new. If the optional argument count is given, only the first count occurrences are replaced.

Syntax:

Parameters

old: Here this parameter is used for old string which will be replaced.

new: Here this parameter is used for new string which will replace the old string.

count: The count parameter is used to describe the number of times to process the replace.

Return

It returns string

Let's see some examples of replace() method to understand it's functionality.

Example 1

# Here, we are creating a simple python program to understand the replace() method # with the examples  
# Here, we are creating a Variable and declaration it with some data  
str = "Java is a programming language"  
# Here, we are calling the function  
str2 = str.replace("Java","C")  
# Here, we are declaring another variable str2 and storing the string after performing 
# replace() method
# Here, we are displaying the result  
print("The Old String before performing the replace method is: \n",str)  
print("The new String after performing the replace method is:  \n",str2)  

Output:

The Old String before performing the replace method is: 
 Java is a programming language
The new String after performing the replace method is:  
 C is a programming language

Example 2

# Here, we are creating a simple python program to understand the replace() method # with the examples  
# Here, we are creating a Variable and declaration it with some data  
str = "Java C C# Java Php Python Java"  
# Here, we are calling the function and replacing all the occurrence of the old string  
str2 = str.replace("Java","C#")  
# Here, we are declaring another variable str2 and storing the string after performing 
# replace() method
# Here, we are displaying the result  
print("The Old String before performing the replace method is: \n",str)  
print("The new String after performing the replace method is:  \n",str2) 
# Here, we are calling the function and replacing all the first occurrence of the old  
# string  
str2 = str.replace("Java","C#", 1)  
# Here, we are declaring another variable str2 and storing the string after performing 
# replace() method
# Here, we are displaying the result  
print("The Old String before performing the replace method is: \n",str)  
print("The new String after performing the replace method is:  \n",str2)  

Output:

Old String: 
The Old String before performing the replace method is: 
 Java C C# Java Php Python Java
The new String after performing the replace method is:  
 C# C C# C# Php Python C#

 The Old String before performing the replace method is:  
 Java C C# Java Php Python Java
The new String after performing the replace method is: 
 C# C C# Java Php Python Java

Example 3

# Simple Python program to understand the replace() method with example  
# Variable declaration  
str = "Apple is a fruit"  
# Here, we are calling the function  
str2 = str.replace(str,"Tomato is also a fruit")  
# Here, we are displaying the result  
print(str2)  

Output: