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Python | Convert a list of strings to a list of tuples

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Method # 1: Using map () + split () + tuple ()

This task can be achieved with a combination of these functions ... The map function can be used to associate logic with each line, the split function is used to split the inner contents of a list into various attributes of a tuple, and the tuple function performs the task of forming a tuple.

# Python3 demo code
# convert a list of strings to a list of tuples
# Using map () + split () + tuple ()

 
# initializing list

test_list = [ ’4, 1’ , ’ 3 , 2’ , ’5, 3’ ]

 
# print original list

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

 
# using map () + split () + tuple ()
# convert a list of strings to a list of tuples

res = [ tuple ( map ( int , sub.split ( ’,’ ))) for sub in test_list] 

 
# print result

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

Output:

 The original list: [’4, 1 ’,’ 3, 2’, ’5, 3’] The list after conversion to tuple list: [(4, 1), (3, 2), (5, 3)] 

Method # 2: Using map () + eval
This is the most elegant way to accomplish this particular task. Where the display function is used to extend the function’s logic to the entire list, the eval function internally performs interconversion and splitting.

# Python3 demo code
# convert a list of strings to a list of tuples
# Using map () + eval

 
# initializing list

test_list = [ ’4, 1’ , ’ 3, 2’ , ’5, 3 ’ ]

  
# print original list

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

  
# using the () + eval map
# convert a list of strings to a list of tuples

res = list ( map ( eval , test_list))

  
# print result

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

Output:

 The original list: [’4, 1’,’ 3, 2’, ’5, 3’] The list after conversion to tuple list: [(4, 1), (3, 2), (5, 3) ] 

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