how to change a substring in python code example

Example 1: python replace char in string

# Python3 program to demonstrate the  
# use of replace() method   
  
string = "geeks for geeks geeks geeks geeks" 
   
# Prints the string by replacing geeks by Geeks  
print(string.replace("geeks", "Geeks"))  
  
# Prints the string by replacing only 3 occurrence of Geeks   
print(string.replace("geeks", "GeeksforGeeks", 3))

Example 2: python replace "\" for "/"

my_string = r'\\ServerA\DriveB\5.FolderC\A.TXT'
my_string = my_string.replace('\\', '/')