Using String.replace() method, we can replace all the matching substrings in a string.

 

replace_sub_string.py

str1 = 'hello there, hi there'

str2 = str1.replace('there', 'Krishna')

print('str1 : ', str1)
print('str2 : ', str2)

 Above snippet generate below output.

str1 :  hello there, hi there
str2 :  hello Krishna, hi Krishna

 

  

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