René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"AttributeError: 'xmlparser' object has no attribute 'namespace_prefixes'","articleBody":"Hello! I'm trying to run xonsh shell using rustpython on Mac but faced with error:\n\n```xsh\nxonsh\ncurl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh  # https://rustup.rs/\n# restart shell\ncargo install --features=ssl --git https://github.com/RustPython/RustPython rustpython\n$PATH.append(p'~/.cargo/bin')\n#rustpython -m site  # to get locations\nrustpython --install-pip\nrustpython -m pip install xonsh prompt-toolkit\n```\nHere prompt-toolkit was added - it's the default prompt engine for xonsh shell.\n```xsh\n~/.local/bin/xonsh --no-rc --no-env\n```\nResult:\n```xsh\nTraceback (most recent call last):\n  File \"/Users/pc/.local/bin/xonsh\", line 3, in \u003cmodule\u003e\n    from xonsh.main import main\n  File \"/Users/pc/.local/lib/rustpython3.13/site-packages/xonsh/main.py\", line 12, in \u003cmodule\u003e\n    import xonsh.procs.pipelines as xpp\n  File \"/Users/pc/.local/lib/rustpython3.13/site-packages/xonsh/procs/__init__.py\", line 2, in \u003cmodule\u003e\n    from xonsh.procs import proxies  # noqa\n  File \"/Users/pc/.local/lib/rustpython3.13/site-packages/xonsh/procs/proxies.py\", line 21, in \u003cmodule\u003e\n    import xonsh.tools as xt\n  File \"/Users/pc/.local/lib/rustpython3.13/site-packages/xonsh/tools.py\", line 55, in \u003cmodule\u003e\n    HAVE_CURSOR_SHAPE = False\n  File \"/Users/pc/.local/lib/rustpython3.13/site-packages/xonsh/tools.py\", line 45, in \u003cmodule\u003e\n    from prompt_toolkit.cursor_shapes import (\n  File \"/Users/pc/.local/lib/rustpython3.13/site-packages/prompt_toolkit/__init__.py\", line 29, in \u003cmodule\u003e\n    from .shortcuts import PromptSession, choice, print_formatted_text, prompt\n  File \"/Users/pc/.local/lib/rustpython3.13/site-packages/prompt_toolkit/shortcuts/__init__.py\", line 13, in \u003cmodule\u003e\n    from .progress_bar import ProgressBar, ProgressBarCounter\n  File \"/Users/pc/.local/lib/rustpython3.13/site-packages/prompt_toolkit/shortcuts/progress_bar/__init__.py\", line 3, in \u003cmodule\u003e\n    from .base import ProgressBar, ProgressBarCounter\n  File \"/Users/pc/.local/lib/rustpython3.13/site-packages/prompt_toolkit/shortcuts/progress_bar/base.py\", line 57, in \u003cmodule\u003e\n    from .formatters import Formatter, create_default_formatters\n  File \"/Users/pc/.local/lib/rustpython3.13/site-packages/prompt_toolkit/shortcuts/progress_bar/formatters.py\", line 129, in \u003cmodule\u003e\n    class Percentage(Formatter):\n  File \"/Users/pc/.local/lib/rustpython3.13/site-packages/prompt_toolkit/shortcuts/progress_bar/formatters.py\", line 134, in Percentage\n    template = HTML(\"\u003cpercentage\u003e{percentage:\u003e5}%\u003c/percentage\u003e\")\n  File \"/Users/pc/.local/lib/rustpython3.13/site-packages/prompt_toolkit/formatted_text/html.py\", line 35, in __init__\n    document = minidom.parseString(f\"\u003chtml-root\u003e{value}\u003c/html-root\u003e\")\n  File \"/Users/pc/.cargo/git/checkouts/rustpython-63090cdce5e18442/7c3bc5e/crates/pylib/Lib/xml/dom/minidom.py\", line 2016, in parseString\n    return expatbuilder.parseString(string)\n  File \"/Users/pc/.cargo/git/checkouts/rustpython-63090cdce5e18442/7c3bc5e/crates/pylib/Lib/xml/dom/expatbuilder.py\", line 922, in parseString\n    return builder.parseString(string)\n  File \"/Users/pc/.cargo/git/checkouts/rustpython-63090cdce5e18442/7c3bc5e/crates/pylib/Lib/xml/dom/expatbuilder.py\", line 218, in parseString\n    parser = self.getParser()\n  File \"/Users/pc/.cargo/git/checkouts/rustpython-63090cdce5e18442/7c3bc5e/crates/pylib/Lib/xml/dom/expatbuilder.py\", line 158, in getParser\n    self._parser = self.createParser()\n  File \"/Users/pc/.cargo/git/checkouts/rustpython-63090cdce5e18442/7c3bc5e/crates/pylib/Lib/xml/dom/expatbuilder.py\", line 719, in createParser\n    parser.namespace_prefixes = True\nAttributeError: 'xmlparser' object has no attribute 'namespace_prefixes'\n```\n\n## For community\n⬇️  **Please click the 👍 reaction instead of leaving a `+1` or 👍  comment**","author":{"url":"https://github.com/anki-code","@type":"Person","name":"anki-code"},"datePublished":"2025-12-24T13:37:03.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/6487/RustPython/issues/6487"}