The official blog of the Python core development team.https://blog.python.org/https://blog.python.org/2026/03/python-3150-alpha-7/https://blog.python.org/2026/03/python-3150-alpha-7/The penultimate 3.15 alpha is out!Tue, 10 Mar 2026 00:00:00 GMTHugo van Kemenadereleaseshttps://blog.python.org/2026/03/cpython-codebase-growth/https://blog.python.org/2026/03/cpython-codebase-growth/An analysis of the growth of CPython's codebase from its first commits to the present daySun, 08 Mar 2026 00:00:00 GMTStan Ulbrychhistoryhttps://blog.python.org/2026/03/python-31213-31115-31020/https://blog.python.org/2026/03/python-31213-31115-31020/[Python Releases For Your Security!](https://discuss.python.org/t/python-3-12-13-3-11-15-and-3-10-20-are-now-available/106363) New security releases for 3.10, 3.11 and 3.12 are now available.Tue, 03 Mar 2026 00:00:00 GMTThomas Woutersreleaseshttps://blog.python.org/2026/03/the-python-insider-blog-has-moved/https://blog.python.org/2026/03/the-python-insider-blog-has-moved/Python Insider now lives at blog.python.org, backed by a Git repository. All 307 posts from the Blogger era have been migrated, and old URLs redirect automatically.Tue, 03 Mar 2026 00:00:00 GMTJacob Coffeepythoncommunityhttps://blog.python.org/2026/02/join-the-python-security-response-team/https://blog.python.org/2026/02/join-the-python-security-response-team/The Python Security Response Team now has an approved public governance document (PEP 811) and is welcoming new members.Tue, 17 Feb 2026 00:00:00 GMTSeth Larsonsecuritypsrthttps://blog.python.org/2026/02/python-3150-alpha-6/https://blog.python.org/2026/02/python-3150-alpha-6/This is an early developer preview of Python 3.15 www.python.org/downloads/release/python-3150a6/ Major new features of the 3.15 series, compared to 3.14 Pyt...Wed, 11 Feb 2026 00:00:00 GMTHugo van Kemenadereleaseshttps://blog.python.org/2026/02/python-3143-and-31312-are-now-available/https://blog.python.org/2026/02/python-3143-and-31312-are-now-available/Python 3.14.3 is now available! This is third maintenance release of Python 3.14 Python 3.14.3 is the third maintenance release of 3.14, containing around ...Tue, 03 Feb 2026 00:00:00 GMTThomas Woutersreleaseshttps://blog.python.org/2026/01/python-3150-alpha-5-yes-another-alpha/https://blog.python.org/2026/01/python-3150-alpha-5-yes-another-alpha/Note: 3.15.0a4 was accidentally built against from 2025-12-23 instead of 2026-01-13, so this 3.15.0a5 is an extra release correctly built against 2026-01-14...Wed, 14 Jan 2026 00:00:00 GMTHugo van Kemenadereleaseshttps://blog.python.org/2026/01/python-3150-alpha-4/https://blog.python.org/2026/01/python-3150-alpha-4/Edit: This 3.15.0a4 was accidentally built against \ from 2025-12-23 instead of 2026-01-13, so 3.15.0a5 is an extra release correctly built against 2026-01-1...Tue, 13 Jan 2026 00:00:00 GMTHugo van Kemenadereleaseshttps://blog.python.org/2025/12/python-3150-alpha-3/https://blog.python.org/2025/12/python-3150-alpha-3/This is an early developer preview of Python 3.15 www.python.org/downloads/release/python-3150a3/ Major new features of the 3.15 series, compared to 3.14 Pyt...Tue, 16 Dec 2025 00:00:00 GMTHugo van Kemenadereleaseshttps://blog.python.org/2025/12/python-3142-and-31311-are-now-available/https://blog.python.org/2025/12/python-3142-and-31311-are-now-available/Two more, just three days after the last? Yes! We found some regressions, so here’s an expedited pair of releases. They also come with some bonus security fi...Fri, 05 Dec 2025 00:00:00 GMTHugo van Kemenadereleaseshttps://blog.python.org/2025/12/python-31310-is-now-available-too-you/https://blog.python.org/2025/12/python-31310-is-now-available-too-you/The latest version of Python 3.13 is now available! Python 3.13.10 https://www.python.org/downloads/release/python-31310/ This is the tenth maintenance rel...Tue, 02 Dec 2025 00:00:00 GMTThomas Woutersreleaseshttps://blog.python.org/2025/12/python-3141-is-now-available/https://blog.python.org/2025/12/python-3141-is-now-available/!Two snakes enjoying a pie with 3.14 on the top and π crimping This is first maintenance release of Python 3.14 Python 3.14.1 is the first maintenance release...Tue, 02 Dec 2025 00:00:00 GMTHugo van Kemenadereleaseshttps://blog.python.org/2025/11/python-3150a2/https://blog.python.org/2025/11/python-3150a2/This is an early developer preview of Python 3.15 https://www.python.org/downloads/release/python-3150a2/ Major new features of the 3.15 series, compared to ...Wed, 19 Nov 2025 00:00:00 GMTHugo van Kemenadereleaseshttps://blog.python.org/2025/10/python-3150-alpha-1/https://blog.python.org/2025/10/python-3150-alpha-1/This is an early developer preview of Python 3.15 https://www.python.org/downloads/release/python-3150a1/ Major new features of the 3.15 series, compared to ...Wed, 15 Oct 2025 00:00:00 GMTHugo van Kemenadereleaseshttps://blog.python.org/2025/10/python-3139-is-now-available/https://blog.python.org/2025/10/python-3139-is-now-available/Python 3.13.9 https://www.python.org/downloads/release/python-3139/ 3.13.9 is an expedited release containing a fix for one specific regression in Python 3.1...Tue, 14 Oct 2025 00:00:00 GMTThomas Woutersreleaseshttps://blog.python.org/2025/10/python-31212-31114-31019-and-3924-are/https://blog.python.org/2025/10/python-31212-31114-31019-and-3924-are/[](https://discuss.python.org/t/python-3-12-12-3-11-14-3-10-19-and-3-9-24-are-now-available/104273#p-273973-old-timer-release-party-1)Old-timer Release Party...Thu, 09 Oct 2025 00:00:00 GMTThomas Woutersreleaseshttps://blog.python.org/2025/10/python-3138-is-now-available/https://blog.python.org/2025/10/python-3138-is-now-available/The latest version of Python 3.13 is now available! Python 3.13.8 https://www.python.org/downloads/release/python-3138/ This is the eighth maintenance rele...Tue, 07 Oct 2025 00:00:00 GMTThomas Woutershttps://blog.python.org/2025/10/python-3140-final-is-here/https://blog.python.org/2025/10/python-3140-final-is-here/!Two snakes enjoying a pie with 3.14 on the top and π crimping Python 3.14.0 is now available python.org/downloads/release/python-3140/ This is the stable re...Tue, 07 Oct 2025 00:00:00 GMTHugo van Kemenadereleaseshttps://blog.python.org/2025/09/python-3140rc3-is-go/https://blog.python.org/2025/09/python-3140rc3-is-go/It’s 🪄 finally 🪄 the final 3.14 release candidate! https://www.python.org/downloads/release/python-3140rc3/ Note: It’s another magic release. We fixed anot...Thu, 18 Sep 2025 00:00:00 GMTHugo van Kemenadereleaseshttps://blog.python.org/2025/08/python-3140rc2-and-3137-are-go/https://blog.python.org/2025/08/python-3140rc2-and-3137-are-go/Not one but two expedited releases! 🎉 🎉 Python 3.14.0rc2 It’s the ~final~ 🪄 penultimate 🪄 3.14 release candidate! https://www.python.org/downloads/releas...Thu, 14 Aug 2025 00:00:00 GMTHugo van Kemenadereleaseshttps://blog.python.org/2025/08/python-3136-is-now-available/https://blog.python.org/2025/08/python-3136-is-now-available/The latest version of Python 3.13 is now available! [](https://discuss.python.org/t/python-3-13-6-has-been-released/101482#p-265330-python-3136-1)Python 3.13...Wed, 06 Aug 2025 00:00:00 GMTThomas Woutershttps://blog.python.org/2025/07/python-314-release-candidate-1-is-go/https://blog.python.org/2025/07/python-314-release-candidate-1-is-go/It’s the first 3.14 release candidate! https://www.python.org/downloads/release/python-3140rc1/ This is the first release candidate of Python 3.14 This relea...Tue, 22 Jul 2025 00:00:00 GMTHugo van Kemenadereleaseshttps://blog.python.org/2025/07/python-3140-beta-4-is-here/https://blog.python.org/2025/07/python-3140-beta-4-is-here/It’s the final 3.14 beta! https://www.python.org/downloads/release/python-3140b4/ This is a beta preview of Python 3.14 Python 3.14 is still in development. ...Tue, 08 Jul 2025 00:00:00 GMTHugo van Kemenadereleaseshttps://blog.python.org/2025/06/python-3140-beta-3-is-here/https://blog.python.org/2025/06/python-3140-beta-3-is-here/It’s 3.14 beta 3! https://www.python.org/downloads/release/python-3140b3/ This is a beta preview of Python 3.14 Python 3.14 is still in development. This rel...Tue, 17 Jun 2025 00:00:00 GMTHugo van Kemenadereleaseshttps://blog.python.org/2025/06/python-3135-is-now-available/https://blog.python.org/2025/06/python-3135-is-now-available/When I was younger we would call this a brown paper bag release, but actually, we shouldn’t hide from our mistakes. We’re only human. So, please enjoy: [](ht...Wed, 11 Jun 2025 00:00:00 GMTThomas Woutershttps://blog.python.org/2025/06/python-3134-31211-31113-31018-and-3923/https://blog.python.org/2025/06/python-3134-31211-31113-31018-and-3923/Python Release Party It was only meant to be release day for 3.13.4 today, but poor number 13 looked so lonely… And hey, we had a couple of tarfile CVEs that...Tue, 03 Jun 2025 00:00:00 GMTThomas Woutershttps://blog.python.org/2025/05/python-3140-beta-2-is-here/https://blog.python.org/2025/05/python-3140-beta-2-is-here/Here’s the second 3.14 beta. https://www.python.org/downloads/release/python-3140b2/ This is a beta preview of Python 3.14 Python 3.14 is still in developmen...Mon, 26 May 2025 00:00:00 GMTHugo van Kemenadereleaseshttps://blog.python.org/2025/05/python-3140-beta-1-is-here/https://blog.python.org/2025/05/python-3140-beta-1-is-here/Only one day late, welcome to the first beta! https://www.python.org/downloads/release/python-3140b1/ This is a beta preview of Python 3.14 Python 3.14 is st...Wed, 07 May 2025 00:00:00 GMTHugo van Kemenadereleaseshttps://blog.python.org/2025/04/python-3140a7-3133-31210-31112-31017/https://blog.python.org/2025/04/python-3140a7-3133-31210-31112-31017/Not one, not two, not three, not four, not five, but six releases! Is this the most in a single day? 3.12-3.14 were regularly scheduled, and we had some secu...Tue, 08 Apr 2025 00:00:00 GMTHugo van Kemenadereleaseshttps://blog.python.org/2025/03/python-3140-alpha-6-is-out/https://blog.python.org/2025/03/python-3140-alpha-6-is-out/Here comes the penultimate alpha. https://www.python.org/downloads/release/python-3140a6/ This is an early developer preview of Python 3.14 Major new feature...Fri, 14 Mar 2025 00:00:00 GMTHugo van Kemenadereleaseshttps://blog.python.org/2025/02/python-3140-alpha-5-is-out/https://blog.python.org/2025/02/python-3140-alpha-5-is-out/Here comes the antepenultimate alpha. https://www.python.org/downloads/release/python-3140a5/ This is an early developer preview of Python 3.14 Major new fea...Tue, 11 Feb 2025 00:00:00 GMTHugo van Kemenadereleaseshttps://blog.python.org/2025/02/python-3132-and-3129-now-available/https://blog.python.org/2025/02/python-3132-and-3129-now-available/A small release day today! That is to say the releases are relatively small; the day itself was of average size, as most days are. Python 3.13.2 Python 3.13’...Tue, 04 Feb 2025 00:00:00 GMTThomas Woutershttps://blog.python.org/2025/01/python-3140-alpha-4-is-out/https://blog.python.org/2025/01/python-3140-alpha-4-is-out/Hello, three dot fourteen dot zero alpha four! https://www.python.org/downloads/release/python-3140a4/ This is an early developer preview of Python 3.14 Majo...Tue, 14 Jan 2025 00:00:00 GMTHugo van Kemenadereleaseshttps://blog.python.org/2024/12/python-3140-alpha-3-is-out/https://blog.python.org/2024/12/python-3140-alpha-3-is-out/O Alpha 3, O Alpha 3, how lovely are your branches! https://www.python.org/downloads/release/python-3140a3/ This is an early developer preview of Python 3.14...Tue, 17 Dec 2024 00:00:00 GMTHugo van Kemenadereleaseshttps://blog.python.org/2024/12/python-3131-3128-31111-31016-and-3921/https://blog.python.org/2024/12/python-3131-3128-31111-31016-and-3921/Another big release day! Python 3.13.1 and 3.12.8 were regularly scheduled releases, but they do contain a few security fixes. That makes it a nice time to r...Wed, 04 Dec 2024 00:00:00 GMTThomas Woutershttps://blog.python.org/2024/11/python-3140-alpha-2-released/https://blog.python.org/2024/11/python-3140-alpha-2-released/Alpha 2? But Alpha 1 only just came out! https://www.python.org/downloads/release/python-3140a2/ This is an early developer preview of Python 3.14 Major new ...Tue, 19 Nov 2024 00:00:00 GMTHugo van Kemenadereleaseshttps://blog.python.org/2024/10/python-3140-alpha-1-is-now-available/https://blog.python.org/2024/10/python-3140-alpha-1-is-now-available/It's now time for a new alpha of a new version of Python! https://www.python.org/downloads/release/python-3140a1/ This is an early developer preview of Python...Tue, 15 Oct 2024 00:00:00 GMTHugo van Kemenadereleaseshttps://blog.python.org/2024/10/python-3130-final-released/https://blog.python.org/2024/10/python-3130-final-released/Python 3.13.0 is now available https://www.python.org/downloads/release/python-3130/ This is the stable release of Python 3.13.0 Python 3.13.0 is the newest ...Mon, 07 Oct 2024 00:00:00 GMTThomas Woutershttps://blog.python.org/2024/10/python-3127-released/https://blog.python.org/2024/10/python-3127-released/I'm pleased to announce the release of Python 3.12.7: https://www.python.org/downloads/release/python-3127/ This is the seventh maintenance release of Pyth...Tue, 01 Oct 2024 00:00:00 GMTThomas Woutershttps://blog.python.org/2024/10/python-3130-release-candidate-3-released/https://blog.python.org/2024/10/python-3130-release-candidate-3-released/I'm pleased to announce the release of Python 3.13 release candidate 3 (instead of the expected final release). https://www.python.org/downloads/release/pyth...Tue, 01 Oct 2024 00:00:00 GMTThomas Woutershttps://blog.python.org/2024/09/python-3130rc2-3126-31110-31015-3920/https://blog.python.org/2024/09/python-3130rc2-3126-31110-31015-3920/Hi there! A big joint release today. Mostly security fixes but we also have the final release candidate of 3.13 so let’s start with that! Python 3.13.0RC2 ...Sat, 07 Sep 2024 00:00:00 GMTŁukasz Langahttps://blog.python.org/2024/08/python-3125-released/https://blog.python.org/2024/08/python-3125-released/I'm pleased to announce the release of Python 3.12.5: https://www.python.org/downloads/release/python-3125/ This is the fifth maintenance release of Python...Wed, 07 Aug 2024 00:00:00 GMTThomas Woutershttps://blog.python.org/2024/08/python-3130-release-candidate-1-released/https://blog.python.org/2024/08/python-3130-release-candidate-1-released/I'm pleased to announce the release of Python 3.13 release candidate 1. https://www.python.org/downloads/release/python-3130rc1/ This is the first release ca...Thu, 01 Aug 2024 00:00:00 GMTThomas Woutershttps://blog.python.org/2024/07/python-3130-beta-4-released/https://blog.python.org/2024/07/python-3130-beta-4-released/I'm pleased to announce the release of Python 3.13 beta 4. https://www.python.org/downloads/release/python-3130b4/ This is a beta preview of Python 3.13 Pyth...Thu, 18 Jul 2024 00:00:00 GMTThomas Woutershttps://blog.python.org/2024/06/python-3130-beta-3-released/https://blog.python.org/2024/06/python-3130-beta-3-released/I'm pleased to announce the release of Python 3.13 beta 3. https://www.python.org/downloads/release/python-3130b3/ This is a beta preview of Python 3.13 Pyth...Thu, 27 Jun 2024 00:00:00 GMTThomas Woutershttps://blog.python.org/2024/06/python-3124-released/https://blog.python.org/2024/06/python-3124-released/I'm pleased to announce the release of Python 3.12.4: https://www.python.org/downloads/release/python-3124/ This is the third maintenance release of Python 3...Fri, 07 Jun 2024 00:00:00 GMTThomas Woutershttps://blog.python.org/2024/06/python-3130-beta-2-released/https://blog.python.org/2024/06/python-3130-beta-2-released/I'm pleased to announce the release of Python 3.13 beta 2. https://www.python.org/downloads/release/python-3130b2/ This is a beta preview of Python 3.13 Pyth...Fri, 07 Jun 2024 00:00:00 GMTThomas Woutershttps://blog.python.org/2024/05/python-3130-beta-1-released/https://blog.python.org/2024/05/python-3130-beta-1-released/I'm pleased to announce the release of Python 3.13 beta 1 (and feature freeze for Python 3.13). https://www.python.org/downloads/release/python-3130b1/ This ...Wed, 08 May 2024 00:00:00 GMTThomas Woutershttps://blog.python.org/2024/04/python-3123-and-3130a6-released/https://blog.python.org/2024/04/python-3123-and-3130a6-released/*It’s time to eclipse the Python 3.11.9 release with two releases, one of which is the very last alpha release of Python 3.13: [](https://discuss.python.org/...Tue, 09 Apr 2024 00:00:00 GMTThomas Wouters