Introduction to NumPy

NumPy (Numerical Python) is the library for working with numbers in Python. Its core object is the ndarray — an n-dimensional array: a grid of values that all share one data type.

Almost the entire Python data ecosystem is built on it: pandas, scikit-learn, SciPy, Matplotlib, and deep-learning libraries all use NumPy arrays under the hood. Learning NumPy is learning the foundation of data science in Python.