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What is the size of a list in Python?

A list of entries within Python is a data type for collection that can be ordered and changed. The list may include duplicate entries too. This is because the Python len() method is utilized to calculate the length of an object. In this article, we’ll be able to determine the length of the list using Python in the following order

The Python language has a list data type. Python, List is a collection data type that is arranged and able to be changed. Lists can contain duplicate entries too. In this case, you must identify the total amount of entries within a list. Take a look at the following examples.

Syntax for Python’s function len() function.

This is the way you can utilize Len() method in Python:


For instance, we have the following list:

A list = [5, 10, 15, 20, ‘a’, ‘b’, ‘c’]

This is the way you could utilize to use the len() method to determine the length of the list:

Length of List = len(A_list)

When you use the function length, it can offer an object that could be an array (list or tuple), string bytes, the range) or collections, such as an alphabetical dictionary.

Take a look at the following examples applying this() method to calculate an array’s length, arrays dictionary, tuple and dictionary.


Input : a = [1, 2, 3, 1, 2, 3]

Output : 6

Check the number of entries on the list

Input : a = []

Output : 0

This is to utilize the term len() within Python

Len number()

A = []





print(“The length of the list includes: “, len(a))


The length of the list is 4.

Length of List in Python By Len() Function

There are two widely employed and fundamental methods used to calculate how long the listing is in Python:

* Len() Function(Method)

Len() Method

It has a built-in feature known as len() to calculate an overall count of the items contained in an array, list dictionary, array or other. Len() method requires an argument from which you make a list and gives the total length for your list.

Len() procedure is among the most popular and efficient ways to calculate the length of a list in Python. This is the most common method used by all programmer today.


1 len(list)

List parameter is a list of elements. List parameter refers to a listing that indicates it is the amount of items in the list are to be calculated. It will return how many elements are included in the list.



2 ListName = [“Hello”, “Devapoint”, 1, 2, 3]

Print (“Number of the items on this list is “, len(ListName))


Categorized as Python

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