The fundamental package for scientific computing with Python. https://numpy.org
  • Python 61.5%
  • C 29.9%
  • C++ 5%
  • Cython 2.8%
  • Meson 0.5%
  • Other 0.2%
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2026-09-21 18:15:12 +02:00
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benchmarks PERF: Avoid refilling buffers for operands broadcast over them (#32595) 2026-09-21 13:25:54 +02:00
branding/logo DOC: correct Logo SVG files rendered in dark by Figma (#24975) 2023-11-01 21:41:48 +01:00
doc MAINT: silence invalid warning for np.log(complex(np.nan, np.nan)) and such (#32706) 2026-09-21 08:17:45 -06:00
meson_cpu MAINT: Fix typos 2026-03-26 18:31:18 +02:00
numpy TYP: fix lint errors in stubs (#32737) 2026-09-21 18:15:12 +02:00
pixi-packages MAINT: pixi-packages: use python 3.15 branch (#32172) 2026-08-03 15:10:20 -06:00
requirements MAINT, DOC: update numpydoc pin to 1.11.0 (#32699) 2026-09-19 10:26:44 -07:00
tools DOC: Remove references to removed --doctests and --rst options 2026-09-16 22:06:58 -07:00
vendored-meson BLD: update vendored meson to include iOS Accelerate and Elbrus patches (#32020) 2026-07-16 22:08:57 +02:00
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building_with_meson.md DOC: remove a redundant build command 2026-03-06 22:32:57 +02:00
CITATION.bib DOC: add citation file for GitHub support. 2021-08-23 09:30:26 +02:00
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environment.yml MAINT, DOC: update numpydoc pin to 1.11.0 (#32699) 2026-09-19 10:26:44 -07:00
INSTALL.rst MAINT: require python >= 3.12 2025-12-02 17:14:03 +01:00
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meson.build ENH: guard the Limited API target on free-threaded builds and fix bare Py_LIMITED_API tests (#32554) 2026-09-10 18:24:18 +05:30
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pyproject.toml MAINT: Remove libdivide (#32498) 2026-09-04 14:46:10 -06:00
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ruff.toml MAINT: Remove unused Ruff per-file-ignores 2026-07-29 13:57:57 +02:00
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NumPy is the fundamental package for scientific computing with Python.

It provides:

  • a powerful N-dimensional array object
  • sophisticated (broadcasting) functions
  • tools for integrating C/C++ and Fortran code
  • useful linear algebra, Fourier transform, and random number capabilities

Testing:

NumPy requires pytest. In addition, there are a number of optional test dependencies, like Meson for testing the NumPy C API, Cython for testing the NumPy Cython API, and Hypothesis for additional property-based tests.

Tests can then be run after installation with:

python -c "import numpy, sys; sys.exit(numpy.test() is False)"

Code of Conduct

NumPy is a community-driven open source project developed by a diverse group of contributors. The NumPy leadership has made a strong commitment to creating an open, inclusive, and positive community. Please read the NumPy Code of Conduct for guidance on how to interact with others in a way that makes our community thrive.

Call for Contributions

The NumPy project welcomes your expertise and enthusiasm!

Small improvements or fixes are always appreciated. If you are considering larger contributions to the source code, please contact us through the mailing list first.

Writing code isn’t the only way to contribute to NumPy. You can also:

  • review pull requests
  • help us stay on top of new and old issues
  • develop tutorials, presentations, and other educational materials
  • maintain and improve our website
  • develop graphic design for our brand assets and promotional materials
  • translate website content
  • help with outreach and onboard new contributors
  • write grant proposals and help with other fundraising efforts

For more information about the ways you can contribute to NumPy, visit our website. If you’re unsure where to start or how your skills fit in, reach out! You can ask on the mailing list or here, on GitHub, by opening a new issue or leaving a comment on a relevant issue that is already open.

Our preferred channels of communication are all public, but if you’d like to speak to us in private first, contact our community coordinators at numpy-team@googlegroups.com or on Slack (write numpy-team@googlegroups.com for an invitation).

We also have a biweekly community call, details of which are announced on the mailing list. You are very welcome to join.

If you are new to contributing to open source, this guide helps explain why, what, and how to successfully get involved.