scikit-learn

scikit-learn
Original authorDavid Cournapeau
DeveloperGoogle Summer of Code project
ReleaseJune 2007 (2007-06)
Stable release
1.9.1 / 11 September 2026 (11 September 2026)
Written inPython, Cython, C and C++
Operating systemLinux, macOS, Windows
TypeLibrary for machine learning
LicenseNew BSD License
Websitescikit-learn.org
Repository

scikit-learn (formerly scikits.learn and also known as sklearn) is a free and open-source machine learning library for the Python programming language. It features various classification, regression and clustering algorithms including support-vector machines, random forests, gradient boosting, k-means and DBSCAN, and is designed to interoperate with the Python numerical and scientific libraries NumPy and SciPy. Scikit-learn is a NumFOCUS fiscally sponsored project.