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Title: PEP 11 – CPython platform support | peps.python.org

Open Graph Title: PEP 11 – CPython platform support | peps.python.org

Description: This PEP documents how an operating system (platform) becomes supported in CPython, what platforms are currently supported, and documents past support.

Open Graph Description: This PEP documents how an operating system (platform) becomes supported in CPython, what platforms are currently supported, and documents past support.

Opengraph URL: https://peps.python.org/pep-0011/

direct link

Domain: peps.python.org

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og:site_namePython Enhancement Proposals (PEPs)
og:imagehttps://peps.python.org/_static/og-image.png
og:image:altPython PEPs
og:image:width200
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theme-color#3776ab

Links:

Pythonhttps://www.python.org/
PEP Indexhttps://peps.python.org/pep-0000/
18-Aug-2007https://mail.python.org/archives/list/python-dev@python.org/thread/DSSGXU5LBCMKYMZBRVB6RF3YAB6ST5AV/
14-May-2014https://mail.python.org/archives/list/python-dev@python.org/thread/T7WTUJ6TD3IGYGWV3M4PHJWNLM2WPZAW/
20-Feb-2015https://mail.python.org/archives/list/python-dev@python.org/thread/OEQHRR2COYZDL6LZ42RBZOMIUB32WI34/
10-Mar-2022https://mail.python.org/archives/list/python-committers@python.org/thread/K757345KX6W5ZLTWYBUXOXQTJJTL7GW5/
Abstracthttps://peps.python.org/11#abstract
Rationalehttps://peps.python.org/11#rationale
Support tiershttps://peps.python.org/11#support-tiers
Tier 1https://peps.python.org/11#tier-1
Tier 2https://peps.python.org/11#tier-2
Tier 3https://peps.python.org/11#tier-3
All other platformshttps://peps.python.org/11#all-other-platforms
Noteshttps://peps.python.org/11#notes
Microsoft Windowshttps://peps.python.org/11#microsoft-windows
Legacy C Localehttps://peps.python.org/11#legacy-c-locale
Unsupporting platformshttps://peps.python.org/11#unsupporting-platforms
No-longer-supported platformshttps://peps.python.org/11#no-longer-supported-platforms
Discussionshttps://peps.python.org/11#discussions
Copyrighthttps://peps.python.org/11#copyright
Abstracthttps://peps.python.org/11#abstract
Rationalehttps://peps.python.org/11#rationale
Support tiershttps://peps.python.org/11#support-tiers
Tier 1https://peps.python.org/11#tier-1
STATUShttps://github.com/python/cpython/actions/workflows/build.yml?query=branch%3Amain+is%3Acompleted
Tier 2https://peps.python.org/11#tier-2
STATUShttps://buildbot.python.org/all/#/builders?tags=%2B3.x&tags=%2Btier-2
Tier 3https://peps.python.org/11#tier-3
STATUShttps://buildbot.python.org/all/#/builders?tags=%2B3.x&tags=%2Btier-3
All other platformshttps://peps.python.org/11#all-other-platforms
Noteshttps://peps.python.org/11#notes
Microsoft Windowshttps://peps.python.org/11#microsoft-windows
Fixed Lifecycle Policyhttps://learn.microsoft.com/en-us/lifecycle/policies/fixed
Extended Security Updates (ESU)https://learn.microsoft.com/en-us/lifecycle/faq/extended-security-updates
Modern Lifecycle Policyhttps://learn.microsoft.com/en-us/lifecycle/policies/modern
Windows Lifecycle FAQhttps://learn.microsoft.com/en-us/lifecycle/faq/windows
Legacy C Localehttps://peps.python.org/11#legacy-c-locale
Unsupporting platformshttps://peps.python.org/11#unsupporting-platforms
No-longer-supported platformshttps://peps.python.org/11#no-longer-supported-platforms
http://www.syllable.org/discussion.php?id=2320http://www.syllable.org/discussion.php?id=2320
Discussionshttps://peps.python.org/11#discussions
Consider adding a Tier 3 to tiered platform supporthttps://mail.python.org/archives/list/python-committers@python.org/thread/V3OZPJGA5VJFYM6XYGPZIVPOIYKX6KTD/
Proposed tiered platform supporthttps://mail.python.org/archives/list/python-committers@python.org/thread/K757345KX6W5ZLTWYBUXOXQTJJTL7GW5/
Update to PEP 11 to clarify garnering platform supporthttps://mail.python.org/archives/list/python-dev@python.org/thread/OEQHRR2COYZDL6LZ42RBZOMIUB32WI34/
Where is our official policy of what platforms we do support?https://mail.python.org/archives/list/python-dev@python.org/thread/T7WTUJ6TD3IGYGWV3M4PHJWNLM2WPZAW/
PEP 11 update - Call for port maintainers to step forwardhttps://mail.python.org/archives/list/python-dev@python.org/thread/DSSGXU5LBCMKYMZBRVB6RF3YAB6ST5AV/
Copyrighthttps://peps.python.org/11#copyright
https://github.com/python/peps/blob/main/peps/pep-0011.rsthttps://github.com/python/peps/blob/main/peps/pep-0011.rst
2025-10-09 17:15:34 GMThttps://github.com/python/peps/commits/main/peps/pep-0011.rst
Abstracthttps://peps.python.org/11#abstract
Rationalehttps://peps.python.org/11#rationale
Support tiershttps://peps.python.org/11#support-tiers
Tier 1https://peps.python.org/11#tier-1
Tier 2https://peps.python.org/11#tier-2
Tier 3https://peps.python.org/11#tier-3
All other platformshttps://peps.python.org/11#all-other-platforms
Noteshttps://peps.python.org/11#notes
Microsoft Windowshttps://peps.python.org/11#microsoft-windows
Legacy C Localehttps://peps.python.org/11#legacy-c-locale
Unsupporting platformshttps://peps.python.org/11#unsupporting-platforms
No-longer-supported platformshttps://peps.python.org/11#no-longer-supported-platforms
Discussionshttps://peps.python.org/11#discussions
Copyrighthttps://peps.python.org/11#copyright
Page Source (GitHub)https://github.com/python/peps/blob/main/peps/pep-0011.rst?plain=1

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