String Replace in python – replace() Function

replace() Function in python replaces a  string or substring with an alternative string, which can have different size. In this tutorial we will learn

• a simple string replacement by replace() function of python

Syntax of replace() Function in python:

old – The old substring to be replaced

new- substring, which would replace old substring.

Count –  optional argument , number of occurrences to be replaced

Example 1 of replace() Function in python

str1 = "python is my favourite language"

print str1.replace("my","everyones")

replaces “my” with “everyone” so the output will be

Example 2 of replace() Function in python

str1 = "python is my favourite language"

print str1.replace("a","A",1)
print str1.replace("a","A")

• First replace() Function replaces “i” with “I” in first occurrence
• First replace() Function replaces “i” with “I” in all the occurrences