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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"sysconfig.get_platform() could return wrong value because sys.version is truncated","articleBody":"# Bug report\n\n### Bug description:\n\nOn Windows, `sysconfig.get_platform()` checks for the string `amd64` (for 64 intel) in `sys.version`.\n\nThis is the value of `sys.version` for python 3.14.3 (64 bit) compiled with clang 22.1.0\n\n```pycon\n\u003e\u003e\u003e sys.version\n'3.14.3 (main, Mar  2 2026, 14:42:29) [Clang 22.1.0 (https://github.com/llvm/llvm-project 4434dabb69916856b824f68a64b0'\n\u003e\u003e\u003e sysconfig.get_platform()\n'win32'\n\u003e\u003e\u003e import platform\n\u003e\u003e\u003e platform.architecture()[0]\n'64bit'\n```\n\nAs visible, there is no `amd64` in `sys.version`, because it is truncated. This causes problem when installing native package using pip because `cp314-cp314-amd64` is not in the list of supported tags. Instead, the supported tags list become\n\n```\nCompatible tags: 48\n  cp314-cp314-win32\n  cp314-abi3-win32\n  cp314-none-win32\n  cp313-abi3-win32\n  cp312-abi3-win32\n  cp311-abi3-win32\n  cp310-abi3-win32\n  cp39-abi3-win32\n  cp38-abi3-win32\n  cp37-abi3-win32\n  cp36-abi3-win32\n  cp35-abi3-win32\n  cp34-abi3-win32\n  cp33-abi3-win32\n  cp32-abi3-win32\n  (truncated)\n```\n\n### CPython versions tested on:\n\n3.14\n\n### Operating systems tested on:\n\nWindows\n\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-146145\n* gh-146148\n* gh-146146\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/char101","@type":"Person","name":"char101"},"datePublished":"2026-03-02T09:45:44.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":12},"url":"https://github.com/145410/cpython/issues/145410"}