Remove admonition from Markdown

remove-admonition.py

#!/usr/bin/env -S uv run --script
# /// script
# dependencies = [
#   "markdown-it-py",
#   "mdformat",
#   "mdformat-gfm-alerts",
# ]
# ///
import os
import pathlib

import markdown_it
from markdown_it.tree import SyntaxTreeNode
from mdformat.renderer import MDRenderer
import mdformat_gfm_alerts.plugin as alerts_plugin

# Parse
workspace = pathlib.Path(os.environ['GITHUB_WORKSPACE'])
readme_path = workspace / 'README_.md'

parser = markdown_it.MarkdownIt('commonmark')
alerts_plugin.update_mdit(parser)

root = SyntaxTreeNode(parser.parse(readme_path.read_text()))

# Mutate
for node in root.walk():
    if node.type == 'gfm_alert' and node.parent:
        node.parent.children.remove(node)
        break

# Round-trip
options = dict(parser.options)
options.setdefault("parser_extension", []).append(alerts_plugin)
result = MDRenderer().render(root.to_tokens(), options=options, env={})
readme_path.write_text(result)