René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"cmd2 crash running with Python 3.15.0a6","articleBody":"Attempting to run any `cmd2` app using the latest alpha version of Python 3.15, 3.15.0a6, results in a crash in our `argparse_custom.py` code.\n\nThe crash looks like:\n\n```sh\n    class ArgparseApp(cmd2.Cmd):\ntests/test_argparse.py:58: in ArgparseApp\n    tag_parser = cmd2.Cmd2ArgumentParser(description='create a html tag')\n                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\ncmd2/argparse_custom.py:1205: in __init__\n    super().__init__(\n../../../.local/share/uv/python/cpython-3.15.0a6-macos-aarch64-none/lib/python3.15/argparse.py:1992: in __init__\n    self.add_argument(\ncmd2/argparse_custom.py:801: in _add_argument_wrapper\n    new_arg = orig_actions_container_add_argument(self, *args, **kwargs)\n              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n../../../.local/share/uv/python/cpython-3.15.0a6-macos-aarch64-none/lib/python3.15/argparse.py:1625: in add_argument\n    formatter = self._get_validation_formatter()\n                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n../../../.local/share/uv/python/cpython-3.15.0a6-macos-aarch64-none/lib/python3.15/argparse.py:2817: in _get_validation_formatter\n    self._cached_formatter = self._get_formatter()\n                             ^^^^^^^^^^^^^^^^^^^^^\ncmd2/argparse_custom.py:1263: in _get_formatter\n    return cast(Cmd2HelpFormatter, super()._get_formatter())\n                                   ^^^^^^^^^^^^^^^^^^^^^^^^\n../../../.local/share/uv/python/cpython-3.15.0a6-macos-aarch64-none/lib/python3.15/argparse.py:2810: in _get_formatter\n    formatter._set_color(self.color, file=file)\nE   TypeError: RichHelpFormatter._set_color() got an unexpected keyword argument 'file'\n```","author":{"url":"https://github.com/tleonhardt","@type":"Person","name":"tleonhardt"},"datePublished":"2026-03-07T20:00:53.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/1603/cmd2/issues/1603"}