Python – Random Replacement of Word in String

Given a string and List, replace each occurrence of K word in string with random element from list. 

Input : test_str = “Gfg is x. Its also x for geeks”, repl_list = [“Good”, “Better”, “Best”], repl_word = “x”
Output : Gfg is Best. Its also Better for geeks
Explanation : x is replaced by random replace list values.

Input : test_str = “Gfg is x. Its also x for geeks”, repl_list = [“Good”, “Better”, “Nice”], repl_word = “x”
Output : Gfg is Best. Its also Nice for geeks
Explanation : x is replaced by random replace list values, “Best” and “Nice”.

Method #1 :  Using shuffle() + loop + replace()

The combination of above functions can be used to solve this problem. In this, we replace each occurrence of K word with random string from list using replace().



Python3

filter_none

edit
close

play_arrow

link
brightness_4
code

# Python3 code to demonstrate working of 
# Random Replacement of Word in String
# Using replace() + shuffle() + loop
from random import shuffle
  
# initializing string
test_str = "Gfg is val. Its also val for geeks"
  
# printing original string
print("The original string is : " + str(test_str))
  
# initializing list 
repl_list = ["Good", "Better", "Best"]
  
# initializing replace word
repl_word = "val"
  
# shuffing list order
shuffle(repl_list)
for ele in repl_list:
      
    # replacing with random string 
    test_str = test_str.replace(repl_word, ele, 1)
      
# printing result 
print("String after random replacement : " + str(test_str)) 

chevron_right






                        filter_none










Output


The original string is : Gfg is val. Its also val for geeks
String after random replacement : Gfg is Best. Its also Better for geeks






Method #2 : Using list comprehension + replace() + shuffle()


This is one of the ways in which this task can be performed. In this, we encapsulate entire logic in one-liner using similar functionalities as above method.




Python3














                                    filter_none




                                    edit

                                    close




                                    play_arrow




                                    link

                                    brightness_4

                                    code
                                




















# Python3 code to demonstrate working of  


# Random Replacement of Word in String 


# Using list comprehension + replace() + shuffle() 


from random import shuffle 


  


# initializing string 


test_str = "Gfg is val. Its also val for geeks"


  


# printing original string 


print("The original string is : " + str(test_str)) 


  


# initializing list  


repl_list = ["Good", "Better", "Best"] 


  


# initializing replace word 


repl_word = "val"


  


# one-liner to solve problem 


shuffle(repl_list) 


res = [test_str.replace(repl_word, ele, 1) for ele in repl_list] 


      


# printing result  


print("String after random replacement : " + str(res))  



















                        chevron_right







                        filter_none










Output


The original string is : Gfg is val. Its also val for geeks

String after random replacement : [‘Gfg is Good. Its also val for geeks’, ‘Gfg is Better. Its also val for geeks’, ‘Gfg is Best. Its also val for geeks’]









    

        My Personal Notes
        arrow_drop_up
    

    

        
        

            
            
        

    


Recommended Posts:
manjeet_04
Check out this Author's contributed articles.
If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.
Please Improve this article if you find anything incorrect by clicking on  the "Improve Article" button below.