Skip to content
Related Articles

Related Articles

Improve Article
Python – Replace all occurrences of a substring in a string
  • Difficulty Level : Basic
  • Last Updated : 28 Apr, 2020

Sometimes, while working with Python strings, we can have a problem in which we need to replace all occurrences of a substring with other.

Input : test_str = “geeksforgeeks”
s1 = “geeks”
s2 = “abcd”
Output : test_str = “abcdsforabcds”
Explanation : We replace all occurrences of s1 with s2 in test_str.

Input : test_str = “geeksforgeeks”
s1 = “for”
s2 = “abcd”
Output : test_str = “geeksabcdgeeks”

We use maketrans() and translate(). This is inbuild way to perform this task. This function maintains the table internally and performs the task of swapping.




# Python3 code to demonstrate working of 
# Swap Binary substring
# Using translate()
  
# initializing string
test_str = "geeksforgeeks"
  
# printing original string
print("The original string is : " + test_str)
  
# Swap Binary substring
# Using translate()
temp = str.maketrans("geek", "abcd")
test_str = test_str.translate(temp)
  
# printing result 
print("The string after swap : " + str(test_str)) 
Output:
The original string is : geeksforgeeks
The string after swap : accdsforaccds

 Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.  

To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course. And to begin with your Machine Learning Journey, join the Machine Learning – Basic Level Course

My Personal Notes arrow_drop_up
Recommended Articles
Page :