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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"argparse does not strip the outer [] in a group in color mode","articleBody":"# Bug report\n\nWithout color, `argparse` strips  the outer [] in a group. But it is not stripped with color.\n\nThe following example:\n```py\nimport argparse\n\nparser = argparse.ArgumentParser(color=False, prog=\"PROG\")\ngroup = parser.add_mutually_exclusive_group()\ngroup.add_argument('--foo', action='store_true', help='FOO')\ngroup.add_argument('--spam', help='SPAM')\ngroup.add_argument('badger', nargs='*', help='BADGER')\nprint(parser.format_usage())\n\nparser = argparse.ArgumentParser(color=True, prog=\"PROG\")\ngroup = parser.add_mutually_exclusive_group()\ngroup.add_argument('--foo', action='store_true', help='FOO')\ngroup.add_argument('--spam', help='SPAM')\ngroup.add_argument('badger', nargs='*', help='BADGER')\nprint(parser.format_usage())\n```\noutputs:\n```\nusage: PROG [-h] [--foo | --spam SPAM | badger ...]\n\nusage: PROG [-h] [--foo | --spam SPAM | [badger ...]]\n\n```\n(the latter line in color).\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-142333\n* gh-142356\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/serhiy-storchaka","@type":"Person","name":"serhiy-storchaka"},"datePublished":"2025-12-06T10:42:18.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/142332/cpython/issues/142332"}