Create List of Lists in Python

What is List of Lists in Python?

A list of lists in Python is a list where each element of the outer list is itself a list. This creates a two-dimensional structure, often referred to as a matrix or a 2D list. Each inner list can have a different length, allowing for irregular or jagged structures. This versatile data structure is commonly used to represent tabular data, matrices, or nested collections of elements....

Create List of Lists in Python

There, are various ways to create List of Lists in Python. here we are explaining some generally used method to List of Lists in Python and uses of List of Lists in Python those are following....

Create a List of Lists Using append() Function

In this example the code initializes an empty list called `list_of_lists` and appends three lists using append() function to it, forming a 2D list. The resulting structure is then printed using the `print` statement....

Create a List of Lists Using the List Initializer

...

Create a List of Lists Using List Comprehension

In this example code employs a list initializer to create a 2D list named `list_of_lists`, representing rows of values. The resulting structure is printed using the `print` statement....

Create a List of Lists Using For-Loop in Python

...

Traverse a List of Lists in Python

In this example, the inner list comprehension [i for i in range(1, 4)] generates a list [1, 2, 3]. The outer list comprehension [… for _ in range(3)] repeats this inner list three times, creating a list of lists with three rows....