Python List of List Programs (original) (raw)

Last Updated : 06 Feb, 2025

A list of lists is a common data structure in Python, used for handling multi-dimensional data, matrix operations and hierarchical data processing. Python provides several ways to manipulate and transform lists of lists, including sorting, merging, filtering and converting them into different formats.

This collection of Python programs focuses on various techniques for working with lists of lists, such as flattening, sorting, counting elements, merging duplicates, and performing mathematical operations on nested lists. Whether you're dealing with structured data, matrix computations, or hierarchical lists, these programs will help you apply different list-handling techniques efficiently.

Below is a list of useful programs demonstrating how to work with lists of lists in Python. Let’s dive in!

• Flatten a List of Lists in Python
• Sort list of list by specified index
• Initialize List of Lists
• Sort List of Lists Ascending and then Descending
• Ways to sum list of lists and return sum list
• Convert list of string to list of list
• Convert list of tuples to list of list
• Maximum sum of elements of list in a list of lists
• Merging duplicates to list of list
• Sort list of lists by the size of sublists
• Sort list of lists by lexicographic value and then length
• Ways to iterate tuple list of lists
• List of Lists
• Convert List of Lists to Dictionary
• Convert List of lists to list of Sets
• Create A List of Lists Using For Loop
• Check if element exists in list of lists
• Check if a list exists in given list of lists
• Sorting list of lists with similar list elements
• Convert list into list of lists
• Concatenate two list of lists Row-wise
• Remove given element from list of lists
• Convert List of lists to list of Strings
• Convert List of Lists to Tuple of Tuples
• Checking triangular inequality on list of lists
• Count number of lists in a list of lists
• Select Random value from list of lists
• Find common elements in list of lists
• Column deletion from list of lists
• Sort Flatten list of list
• Maximum absolute difference list of list
• Find minimum of each index in list of lists
• Column Product in List of lists
• Merge List with common elements in a List of Lists
• Merge two list of lists according to first element
• Find frequency of given character at every position in list of lists
• Convert a list into a list of lists using a step value
• Get positive elements from given list of lists
• Custom Multiplication in list of lists
• Convert column to separate elements in list of lists
• Filter rows with only Alphabets from List of Lists
• Product of kth column in List of Lists

Similar Reads

• Python List Creation Programs Python provides multiple ways to create lists based on different requirements, such as generating lists of numbers, creating nested lists, forming lists of tuples or dictionaries, and more. This article covers various ways to create lists efficiently, including: Generating lists of numbers, strings, 2 min read
• Python List Counting Programs Python provides various methods, such as count(), dictionary-based counting, and list comprehensions, to efficiently handle counting operations. This collection of Python programs covers different ways to count elements in lists, including counting occurrences, matching elements, frequency analysis, 2 min read
• Python List Removal Programs This article presents a collection of Python programs demonstrating different ways to remove elements from a list. Whether you need to remove duplicates, delete elements by value or index, or filter lists based on conditions, these examples will help you efficiently manipulate lists in Python. Ways 5 min read
• Python List Add/Append Programs This article covers a wide range of methods for adding elements to a list, including: Basic addition techniques like append(), extend(), and insert().Appending multiple items, lists, tuples, dictionaries and objects.Performing list modifications such as adding at the beginning, middle or end.Advance 3 min read
• Python Programs Practice with Python program examples is always a good choice to scale up your logical understanding and programming skills and this article will provide you with the best sets of Python code examples. The below Python section contains a wide collection of Python programming examples. These Python c 11 min read
• Output of Python Programs | (Dictionary) Prerequisite: Dictionary Note: Output of all these programs is tested on Python3 1.What is the output of the following of code? a = {i: i * i for i in range(6)} print (a) Options: a) Dictionary comprehension doesn’t exist b) {0: 0, 1: 1, 2: 4, 3: 9, 4: 16, 5: 25, 6:36} c) {0: 0, 1: 1, 4: 4, 9: 9, 16 2 min read
• Output of Python Programs | Set 22 (Loops) Prerequisite: LoopsNote: Output of all these programs is tested on Python3 1. What is the output of the following?[GFGTABS] Python mylist = ['geeks', 'forgeeks'] for i in mylist: i.upper() print(mylist) [/GFGTABS][‘GEEKS’, ‘FORGEEKS’].[‘geeks’, ‘forgeeks’].[None, None].Unexpected Out 2 min read
• Iterate Over a List of Lists in Python We are given a list that contains multiple sublists, and our task is to iterate over each of these sublists and access their elements. For example, if we have a list like this: [[1, 2], [3, 4], [5, 6]], then we need to loop through each sublist and access elements like 1, 2, 3, and so on. Using Nest 2 min read
• Python List and Tuple Combination Programs Lists and tuples are two of the most commonly used data structures in Python. While lists are mutable and allow modifications, tuples are immutable and provide a stable structure for storing data. This article explores various programs related to list and tuple combinations, covering topics like: So 6 min read
• Output of Python program | Set 15 (Loops) Prerequisite - Loops in Python Predict the output of the following Python programs. 1) What is the output of the following program? [GFGTABS] Python x = ['ab', 'cd'] for i in x: i.upper() print(x) [/GFGTABS]Output:['ab', 'cd']Explanation: The function upper() does not modify a string 2 min read