Python DSA Libraries

Last Updated : 8 Jan, 2026

Data Structures and Algorithms (DSA) form the foundation of effective problem-solving in programming. Python provides several built-in and external libraries that help implement common data structures such as arrays, linked lists, queues, hash maps, heaps, and trees.

Built-in DSA Libraries

These libraries require no installation and are widely used in real-world applications.

1. Array Module

The array module implements the array data structure, where elements of the same data type are stored in contiguous memory locations. It is mainly used when memory efficiency and faster access are required compared to Python lists, especially for numeric data.