NumPy

NumPy

Plot of y=sin(x) function, created with NumPy and Matplotlib libraries
Original author	Travis Oliphant
Developer	Community project
Initial release	As Numeric, 1995 (1995); as NumPy, 2006 (2006)

Stable release	2.4.1 / 10 January 2026 (10 January 2026)

Written in	Python, C
Operating system	Cross-platform
Type	Numerical analysis
License	BSD
Website	numpy.org
Repository	github.com/numpy/numpy

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NumPy (pronounced /ˈnʌmpaɪ/ NUM-py) is a library for the Python programming language, adding support for large, multi-dimensional arrays and matrices, along with a large collection of high-level mathematical functions to operate on these arrays. The predecessor of NumPy, Numeric, was originally created by Jim Hugunin with contributions from several other developers. In 2005, Travis Oliphant created NumPy by incorporating features of the competing Numarray into Numeric, with extensive modifications. NumPy is open-source software and has many contributors. NumPy is fiscally sponsored by NumFOCUS.