NumPy v1.21 Manual

Welcome! This is the documentation for NumPy 1.21.0, last updated Jun 22, 2021.

For users:

What is NumPy? Who uses it and why NumPy: the absolute beginner's guide Installation NumPy quickstart Aimed at domain experts or people migrating to NumPy NumPy for MATLAB users NumPy Tutorials Learn about concepts and submodules NumPy How Tos How to do common tasks with NumPy NumPy fundamentals Building from source Using NumPy C-API F2PY Users Guide and Reference Manual Documentation for the f2py module (Fortran extensions for Python) Glossary List of the most important terms

For developers/contributors:

NumPy contributor guide Contributing to NumPy Under-the-hood docs Specialized, in-depth documentation A guide to NumPy documentation Building the NumPy API and reference docs Benchmarking benchmarking NumPy NumPy Enhancement Proposals

Meta information:

Reporting bugs Release notes

Document conventions License of NumPy

Acknowledgements

Large parts of this manual originate from Travis E. Oliphant's book "Guide to NumPy" (which generously entered public domain in August 2008). The reference documentation for many of the functions are written by numerous contributors and developers of NumPy.

The preferred way to update the documentation is by submitting a pull request on GitHub (see the Documentation index). Please help us to further improve the NumPy documentation!