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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Remove legacy ironpython 2 version check","articleBody":"\u003c!--\r\n  If you're new to Python and you're not sure whether what you're experiencing is a bug, the CPython issue tracker is not\r\n  the right place to seek help. Consider the following options instead:\r\n\r\n  - reading the Python tutorial: https://docs.python.org/3/tutorial/\r\n  - posting in the \"Users\" category on discuss.python.org: https://discuss.python.org/c/users/7\r\n  - emailing the Python-list mailing list: https://mail.python.org/mailman/listinfo/python-list\r\n  - searching our issue tracker (https://github.com/python/cpython/issues) to see if\r\n    your problem has already been reported\r\n--\u003e\r\n\r\n# Bug report\r\n\r\nThe platform module contains various version checks for systems such as cpython and ironpython. The file also contains a specfic case for ironpython 2.6 and 2.7 which can be removed (platform.py does not run with python2)\r\n\r\nRemoving the check improves the import speed as it avoids the compilation of a regular expression.\r\n\r\n```\r\n%timeit _ironpython26_sys_version_parser = re.compile(r'([\\d.]+)\\s*'   r'\\(IronPython\\s*'    r'[\\d.]+\\s*'    r'\\(([\\d.]+)\\) on ([\\w.]+ [\\d.]+(?: \\(\\d+-bit\\))?)\\)' )\r\n383 ns ± 1.66 ns per loop (mean ± std. dev. of 7 runs, 1,000,000 loops each)\r\n```\r\n  \n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-102492\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/eendebakpt","@type":"Person","name":"eendebakpt"},"datePublished":"2023-03-07T09:44:46.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/102491/cpython/issues/102491"}