Python | Split a list into sublists of given lengths Last Updated : 20 Feb, 2023 Comments Improve Suggest changes Like Article Like Report The problem of splitting a list into sublists is quite generic but to split in sublist of given length is not so common. Given a list of lists and list of length, the task is to split the list into sublists of given length. Example: Input : Input = [1, 2, 3, 4, 5, 6, 7] length_to_split = [2, 1, 3, 1] Output: [[1, 2], [3], [4, 5, 6], [7]] Method #1: Using islice to split a list into sublists of given length, is the most elegant way. Python3 # Python code to split a list # into sublists of given length. from itertools import islice # Input list initialization Input = [1, 2, 3, 4, 5, 6, 7] # list of length in which we have to split length_to_split = [2, 1, 3, 1] # Using islice Inputt = iter(Input) Output = [list(islice(Inputt, elem)) for elem in length_to_split] # Printing Output print("Initial list is:", Input) print("Split length list: ", length_to_split) print("List after splitting", Output) Output:Initial list is: [1, 2, 3, 4, 5, 6, 7] Split length list: [2, 1, 3, 1] List after splitting [[1, 2], [3], [4, 5, 6], [7]] Time Complexity: O(n)Auxiliary Space: O(1) Method #2: Using zip is another way to split a list into sublists of given length. Python3 # Python code to split a list into # sublists of given length. from itertools import accumulate # Input list initialization Input = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] # list of length in which we have to split length_to_split = [2, 2, 3, 3] # Using islice Output = [Input[x - y: x] for x, y in zip( accumulate(length_to_split), length_to_split)] # Printing Output print("Initial list is:", Input) print("Split length list: ", length_to_split) print("List after splitting", Output) Output:Initial list is: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] Split length list: [2, 2, 3, 3] List after splitting [[1, 2], [3, 4], [5, 6, 7], [8, 9, 10]] Time Complexity: O(1) Auxiliary Space: O(1) Comment More infoAdvertise with us E everythingispossible Follow Improve Article Tags : Python Python Programs Python list-programs Practice Tags : python Similar Reads Python Tutorial - Learn Python Programming Language Python is one of the most popular programming languages. 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