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Cpython 3.9

Cpython: 3.9 Release

Release date:
October 31, 2025
Previous version:
v3.8.20 (released September 6, 2024)
Magnitude:
256,434 Diff Delta
Contributors:
555 total committers
Data confidence:
Commits:
4,897 impacting commits

422 Features Released with 3.9

[3.9] gh-131809: Upgrade vendored expat to 2.7.1 (GH-132192)
#132242
[3.9] gh-139700: Check consistency of the zip64 end of central directory record (GH-139702) (GH-139708)
#139715
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Browse Other Releases

Latest Pending Unreleased 😎
v3.9.0a4 Released February 25, 2020
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v3.9.0a3 Released January 24, 2020
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v3.9.0a2 Released December 18, 2019
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v3.9.0a1 Released March 19, 2024
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3.9 Released October 31, 2025
256,434 Ξ”
v3.8.20 Released September 6, 2024
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v3.8.19 Released March 19, 2024
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v3.8.18 Released August 24, 2023
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v3.8.17 Released June 6, 2023
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v3.8.16 Released December 6, 2022
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Top Contributors in 3.9

vstinner
miss-islington
serhiy-storchaka
pablogsal
ambv
lysnikolaou
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