NumPy
W3Schools.com
W3Schools.com
NumPy is a powerful library to work with numerical variables and data such as arrays, vectors, matrices, and mathematical operations. NumPy is the foundation of all numerical computations in Python.
NumPy: Overview
NumPy: Arrays
Creating Vectors and Matrices
Basic Types of Matrices
Addition & Subtraction of Vectors and Matrices
Multiplication & Division of Vectors and Matrices