Convert List of Tuples to Multiple Lists in Python
Convert List of Tuples to Multiple Lists Using map Function
In this example, the code transforms a list of tuples into two separate lists using map() and zip(). It creates ‘list1’ containing the first elements of the tuples and ‘list2’ containing the second elements, then prints both lists.
Python3
# List of Tuples list_of_tuples = [( 1 , 'a' ), ( 2 , 'b' ), ( 3 , 'c' )] # Using map and zip list1, list2 = map ( list , zip ( * list_of_tuples)) # Output print ( "List 1:" , list1) print ( "List 2:" , list2) |
List 1: [1, 2, 3] List 2: ['a', 'b', 'c']
Convert List of Tuples to Multiple Lists Using Iterative Unpacking
In this example, the code employs iterative unpacking to transform a list of tuples into two separate lists. It iterates through each tuple, unpacks its elements into ‘val1’ and ‘val2’, and appends them to ‘list1’ and ‘list2’ respectively, then prints both lists.
Python3
# List of Tuples list_of_tuples = [( 1 , 'a' ), ( 2 , 'b' ), ( 3 , 'c' )] # Iterative Unpacking list1, list2 = [], [] for item in list_of_tuples: val1, val2 = item list1.append(val1) list2.append(val2) # Output print ( "List 1:" , list1) print ( "List 2:" , list2) |
List 1: [1, 2, 3] List 2: ['a', 'b', 'c']
Convert List of Tuples to Multiple Lists Using zip() Function
In this example, the code unpacks a list of tuples using `zip` and separates the elements into three lists: ‘numbers’ containing the first elements, ‘letters’ containing the second elements, and ‘booleans’ containing the third elements. The resulting lists are then printed.
Python3
# Given list of tuples list_of_tuples = [( 1 , 'a' , True ), ( 2 , 'b' , False ), ( 3 , 'c' , True )] # Unpacking tuples using zip numbers, letters, booleans = zip ( * list_of_tuples) # Displaying the resulting lists print ( "Numbers:" , list (numbers)) print ( "Letters:" , list (letters)) print ( "Booleans:" , list (booleans)) |
Numbers: [1, 2, 3] Letters: ['a', 'b', 'c'] Booleans: [True, False, True]
Converting List of Tuples with Different Lengths Using zip_longest() Function
In this example, the code uses zip_longest()
from the itertools
module to unpack a list of tuples with different lengths. It separates the elements into lists, such as ‘numbers,’ ‘letters,’ and ‘booleans,’ while handling varying tuple lengths. The resulting lists are then printed, and any additional elements are collected into the ‘extra’ list.
Python3
from itertools import zip_longest # Given list of tuples with different lengths list_of_tuples = [( 1 , 'a' ), ( 2 , 'b' , True ), ( 3 , 'c' , False , 'extra' )] # Unpacking tuples using zip_longest to handle different lengths numbers, letters, booleans, * \ extra = zip_longest( * list_of_tuples, fillvalue = None ) # Displaying the resulting lists print ( "Numbers:" , list (numbers)) print ( "Letters:" , list (letters)) print ( "Booleans:" , list (booleans)) print ( "Extra:" , extra) |
Numbers: [1, 2, 3] Letters: ['a', 'b', 'c'] Booleans: [None, True, False] Extra: [(None, None, 'extra')]
Convert List of Tuples To Multiple Lists in Python
Managing data often entails working with tuples of information, particularly when working with datasets. For more easy processing, these tuples can sometimes need to be split up into numerous lists. In this article, we will see how to convert list of tuples to multiple lists in Python.