PyPI ○➛ Entries

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PyPI ○➛｜Definition｜1st｜20260114173111-00-⌔

Python Package Index - Wikipedia

Python Package Index

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The Python Package Index, abbreviated as PyPI (/ˌpaɪpiˈaɪ/) and also known as the Cheese Shop (a reference to the Monty Python’s Flying Circus sketch “Cheese Shop”),¹${}^{:8}$²${}^{:742}$ is the official third-party software repository for Python.³ It is analogous to the CPAN repository for Perl⁴${}^{:36}$ and to the CRAN repository for R. PyPI is run by the Python Software Foundation, a charity. Some package managers, including pip, use PyPI as the default source for packages and their dependencies.⁵⁶

As of 13 March 2025, more than 614,339⁷ packages are available.

PyPI primarily hosts Python packages in the form of source archives, called “sdists”, or of “wheels”⁸ that may contain binary modules from a compiled language.

PyPI as an index allows users to search for packages by keywords or by filters against their metadata, such as free software license or compatibility with POSIX.⁹ A single entry on PyPI is able to store, aside from just a package and its metadata, previous releases of the package, precompiled wheels (e.g. containing DLLs on Windows), as well as different forms for different operating systems and Python versions.

Printed 2026-06-28.

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Footnotes

1. Lutz, Mark (2006). Programming Python. Vol. 10 (3 ed.). O’Reilly Media, Inc. ISBN 9780596009250. ↩

2. Ramalho, Luciano (2015). Fluent Python. O’Reilly Media, Inc. ISBN 9781491946268. ↩

3. Hylton, Jeremy (24 September 2003). “Python Package Index Tutorial”. Jeremy Hylton. Archived from the original on 21 May 2012. Retrieved 22 April 2012. ↩

4. Barry, Paul (2010). Head First Python. O’Reilly Media, Inc. ISBN 978-1-4493-8267-4. ↩

5. “Usage”. pip 1.1.post1 documentation. The pip developers. Archived from the original on 2 May 2012. ↩

6. “PyPI mirrors”. Python Package Index. Python Software Foundation. Archived from the original on 3 May 2012. Retrieved 22 April 2012. ↩

7. “PyPI”. PyPI. 2025-03-13. Archived from the original on 2025-02-22. ↩

8. “PEP 427 — The Wheel Binary Package Format 1.0”. Python Software Foundation. 15 February 2013. Retrieved 28 October 2017. ↩

9. “Browse: Python Package Index”. Python Software Foundation. Retrieved 2 August 2016. ↩

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PyPI ○➛｜Link｜1st｜20251021001049-00-●

PyPI · The Python Package Index
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