Difference Between Array and List in Python | Array vs List

By Mohit Uniyal|Updated : September 21st, 2022

Difference Between Array and List in Python is that an array in Python is a linear data structure that can store the data. Array ordered, enclosed, and mutable in square brackets. It also stores non-unique items. But there are restrictions to storing the different data type values, whereas A list in python is a built-in, linear data structure. It is also used for storing the data in a sequence manner. Several operations can perform to list, such as indexing, iterating, and slicing.

Array and List in Python are the important data structure of Python. Both are used to store the data in Python. Here, we will briefly explain Array and List in Python, then explore the difference between Array and List in Python based on various factors.

Table of Content

What is the Difference Between Array and List in Python?

The main difference between array and list in Python is that an array will carry the elements of the same data types, whereas a list can have various elements belonging to data types. The significant differences between these two factors of Python are explained in the table provided below:

Key Differences Between Array and List in Python

Array in Python

List in Python

Array in Python only contains elements that belong to the same data type.

List in Python can contain elements belonging to different data types

It is required to import a module for declaration explicitly.

It does not require explicitly importing a module for declaration.

The array can directly handle arithmetic operations.

A list cannot directly handle arithmetic operations.

The array must consist of all nested elements of the same size.

A list can be nested to consist of different types of elements in size.

It is preferred for an extended sequence of data items.

It is preferred for a short sequence of data items.

It has less flexibility because the addition or deletion has to be done element-wise.

It has greater flexibility, allowing easy modification, like adding or deleting data.

In Array, a loop has to be created or printed or accessed the components.

The list can print the whole list without any explicit looping.

The array is more compact in-memory size comparatively.

A list consumes more memory for easy addition of elements.

Difference Between Array and List in Python

What is an Array in Python?

An array in Python is a vector that contains homogeneous elements, i.e. belonging to the same data type. Elements are addressed with contiguous memory locations that allow easy modification, like addition, deletion, and accessing of elements. Array module is used to declare arrays. In python, if the elements of an array belong to different data types, then an exception called “Incompatible data types” is thrown.

Example of an Array in Python

sample_array = array.array('i', [1, 2, 3])

# accessing elements of array

for i in sample_array:

print(i)

Output :

1

2

3

What is a List in Python?

A list in Python is a collection of items that contain elements of multiple data types. The data type may be either numeric, character logical values, etc. A list is an ordered collection supporting negative indexing. It can be created by using “[ ]” these brackets contains data values. Contents of lists in python can be easily merged and copied using its inbuilt functions.

Example of a List in Python

sample_list = [1,"Mohit",['a','e']]

print(sample_list)

Output:

[1, 'Mohit', ['a', 'e']]

(The first element is an integer type, the second is a string, and the third one is a list of characters.)

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FAQs on Difference Between Array and List

  • The major difference between Array and List in Python is that an array is a data structure that contains a collection of items such as lists, arrays are ordered, enclosed in square brackets, mutable, and able to store non-unique items while A list is also a data structure which built into Python and it also holds a collection of items in it.

  • The list is better from array because for frequent insertion and deletion list is used, while an arrays are much suited for frequent approach of elements scenario. A List occupies more memory as to define every node and it has its own memory set while an arrays are memory-efficient data structure.

  • A list is a data structure which supports several operations in programming while an array in programming is a method of organizing data on a memory device. Also, an array is a combination of homogenous parts, whereas a list contains the heterogeneous elements.

  • A list in Python is a built-in, linear data structure. A list is used to store the data in a better sequence manner. One can perform multiple operations to list, like indexing, iterating, and slicing. It is an ordered combination for supporting negative indexing. A list also can be enclosed in square brackets”[ ]”.

  • An array in Python is a linear data structure which stores the data in it. An array in Python is also ordered, mutable, and enclosed in square brackets”[ ]”. Array can stores the non-unique items and there are some restrictions for storing the different data type values.

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