How to search and replace text in a file using Python?

There is the re.sub() method in Python module re which helps to search a pattern and replace with a new sub string. If the pattern is not found, string is returned unchanged.

Syntax of re.sub()

re.sub(pattern, repl, string):

For example in the code below, we search for ‘India’ and replace it with ‘the World’ in the string 'TP is most popular Tutorials site of India'

Example

result=re.sub(r'India','the World','TP is the most popular Tutorials site of India')
print result

Output

TP is the most popular Tutorials site of the World

Rajendra Dharmkar

Published on 28-Dec-2017 11:03:56

• Related Questions & Answers
• How to Search and Replace text in Python?
• How to find and replace within a text file using Python?
• How to find and replace the word in a text file using PowerShell?
• Search and Replace in Python
• How to write a single line in text file using Python?
• How to write text and output it as a text file using R?
• How to read a text file in Python?
• How to find and replace text in Oracle?
• How to write multiple lines in text file using Python?
• How to replace only text inside a div using jQuery?
• How to work with a text file in Python?
• How to search in the file using PowerShell?
• How to read an entire line from a text file using Python?
• Find and Replace text in the entire table using a MySQL?
• How to read a number of characters from a text file using Python?