array

In Python, an array is a data structure that holds a sequence of objects of the same data type. Arrays allow you to reference multiple values with a single variable, and they can be indexed and iterated over.

Arrays are particularly useful when you need to store a large number of elements of the same type, such as integers or floats, and require operations to be performed on them efficiently.

The array module provides an array() function to create an array. You can specify the type of data the array will hold by providing a type code, such as "i" for integers or "f" for floats. This ensures that all elements in the array are of the specified type, which can lead to performance improvements when performing numerical operations.

Example

Here’s a quick example of how to use the array module to create and manipulate an array of integers:

Python 
>>> import array

>>> numbers = array.array("i", [1, 2, 3, 4, 5])
>>> numbers[0]
1
>>> numbers[1] = 7
>>> numbers
array("i", [1, 7, 3, 4, 5])
>>> numbers.append(6)
>>> numbers
array("i", [1, 7, 3, 4, 5, 6])
>>> numbers.remove(3)
>>> numbers
array("i", [1, 7, 4, 5, 6])
Python's list Data Type: A Deep Dive With Examples

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Python's list Data Type: A Deep Dive With Examples

In this tutorial, you'll dive deep into Python's lists. You'll learn how to create them, update their content, populate and grow them, and more. Along the way, you'll code practical examples that will help you strengthen your skills with this fundamental data type in Python.

intermediate data-structures python

By Leodanis Pozo Ramos • Updated April 28, 2025
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