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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"the re module can perform poorly: O(2**n) versus O(n**2)","articleBody":"BPO | [1662581](https://bugs.python.org/issue1662581)\n--- | :---\nNosy | @terryjreedy, @gpshead, @josiahcarlson, @mdickinson, @pitrou, @yarko\n\n\u003csup\u003e*Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.*\u003c/sup\u003e\n\n\u003cdetails\u003e\u003csummary\u003eShow more details\u003c/summary\u003e\u003cp\u003e\n\nGitHub fields:\n```python\nassignee = None\nclosed_at = \u003cDate 2013-05-16.20:27:53.879\u003e\ncreated_at = \u003cDate 2007-02-17.23:39:24.000\u003e\nlabels = ['interpreter-core', 'type-feature', '3.7']\ntitle = 'the re module can perform poorly: O(2**n) versus O(n**2)'\nupdated_at = \u003cDate 2021-04-12.01:41:22.501\u003e\nuser = 'https://github.com/gpshead'\n```\n\nbugs.python.org fields:\n```python\nactivity = \u003cDate 2021-04-12.01:41:22.501\u003e\nactor = 'gregory.p.smith'\nassignee = 'none'\nclosed = True\nclosed_date = \u003cDate 2013-05-16.20:27:53.879\u003e\ncloser = 'gregory.p.smith'\ncomponents = ['Interpreter Core']\ncreation = \u003cDate 2007-02-17.23:39:24.000\u003e\ncreator = 'gregory.p.smith'\ndependencies = []\nfiles = []\nhgrepos = []\nissue_num = 1662581\nkeywords = []\nmessage_count = 17.0\nmessages = ['55016', '55017', '55018', '56256', '59627', '69491', '81479', '81484', '81516', '94319', '94322', '129423', '176467', '189352', '189405', '292245', '390808']\nnosy_count = 12.0\nnosy_names = ['aaronsw', 'terry.reedy', 'gregory.p.smith', 'josiahcarlson', 'mark.dickinson', 'pitrou', 'rsc', 'timehorse', 'schmir', 'mrabarnett', 'yarkot', 'witten']\npr_nums = []\npriority = 'normal'\nresolution = 'wont fix'\nstage = None\nstatus = 'closed'\nsuperseder = None\ntype = 'enhancement'\nurl = 'https://bugs.python.org/issue1662581'\nversions = ['Python 3.7']\n```\n\n\u003c/p\u003e\u003c/details\u003e\n","author":{"url":"https://github.com/gpshead","@type":"Person","name":"gpshead"},"datePublished":"2007-02-17T23:39:24.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":17},"url":"https://github.com/44592/cpython/issues/44592"}