Python | Convert list of tuples to list of strings

The interconversion between datatypes is quite useful utility and many articles have been written to perform the same. This article discusses the interconversion between a tuple of characters to individual strings. This kind of interconversion is useful in Machine Learning in which we need to give the input to train model in a specific format. Let’s discuss certain ways in which this can be done.

Method #1 : Using list comprehension + join()
The list comprehension performs the task of iterating the entire list of tuples and join function performs the task of aggregating the elements of tuple into a one list.

filter_none

edit
close

play_arrow

link
brightness_4
code

# Python3 code to demonstrate
# conversion of list of tuple to list of list 
# using list comprehension + join()
  
# initializing list 
test_list = [('G', 'E', 'E', 'K', 'S'), ('F', 'O', 'R'),
                              ('G', 'E', 'E', 'K', 'S')]
  
# printing the original list
print ("The original list is : " + str(test_list))
  
# using list comprehension + join()
# conversion of list of tuple to list of list 
res = [''.join(i) for i in test_list]
  
# printing result
print ("The list after conversion to list of string : " + str(res))

chevron_right






                        filter_none








Output :


        
          
          
          
        

            


The original list is : [(‘G’, ‘E’, ‘E’, ‘K’, ‘S’), (‘F’, ‘O’, ‘R’), (‘G’, ‘E’, ‘E’, ‘K’, ‘S’)]

The list after conversion to list of string : [‘GEEKS’, ‘FOR’, ‘GEEKS’]



 


Method #2 : Using map() + join()

The task performed by the list comprehension can be performed by the map function which can perform extension of logic of one tuple to all tuple in list.













                                    filter_none




                                    edit

                                    close




                                    play_arrow




                                    link

                                    brightness_4

                                    code
                                




















# Python3 code to demonstrate 


# conversion of list of tuple to list of list  


# using map() + join() 


  


# initializing list  


test_list = [('G', 'E', 'E', 'K', 'S'), ('F', 'O', 'R'), 


                              ('G', 'E', 'E', 'K', 'S')] 


  


# printing the original list 


print ("The original list is : " + str(test_list)) 


  


# using map() + join() 


# conversion of list of tuple to list of list  


res = list(map(''.join, test_list)) 


  


# printing result 


print ("The list after conversion to list of string : " + str(res)) 



















                        chevron_right







                        filter_none








Output :



The original list is : [(‘G’, ‘E’, ‘E’, ‘K’, ‘S’), (‘F’, ‘O’, ‘R’), (‘G’, ‘E’, ‘E’, ‘K’, ‘S’)]

The list after conversion to list of string : [‘GEEKS’, ‘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.