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from __future__ import annotations
import json
from html.parser import HTMLParser
from pathlib import Path
import httpx
PROJECT_DIR = Path(__file__).parent.parent
class PythonVersionParser(HTMLParser):
def __init__(self, *, convert_charrefs: bool = True) -> None:
super().__init__(convert_charrefs=convert_charrefs)
self._parsing_release_number_span = False
self._parsing_release_number_a = False
self.parsed_python_versions: list[str] = []
def handle_starttag(self, tag: str, attrs: list[tuple[str, str]]) -> None:
if tag == "span" and any("release-number" in value for key, value in attrs if key == "class"):
self._parsing_release_number_span = True
return
if self._parsing_release_number_span and tag == "a":
self._parsing_release_number_a = True
def handle_endtag(self, tag: str) -> None:
if self._parsing_release_number_span and tag == "span":
self._parsing_release_number_span = False
if self._parsing_release_number_a and tag == "a":
self._parsing_release_number_a = False
def handle_data(self, data: str) -> None:
if self._parsing_release_number_a:
self.parsed_python_versions.append(data[7:])
def dump_python_version_module(dest_file) -> None:
resp = httpx.get("https://python.org/downloads/", follow_redirects=True)
resp_text = resp.text
parser = PythonVersionParser()
parser.feed(resp_text)
python_versions = sorted(parser.parsed_python_versions)
max_versions: dict[str, int] = {}
for version in python_versions:
major, minor, patch = version.split(".")
major_minor = f"{major}.{minor}"
if major not in max_versions or max_versions[major] < int(minor):
max_versions[major] = int(minor)
if major_minor not in max_versions or max_versions[major_minor] < int(patch):
max_versions[major_minor] = int(patch)
with open(dest_file, "w") as f:
json.dump(max_versions, f, sort_keys=True, indent=4)
f.write("\n")
if __name__ == "__main__":
dump_python_version_module(PROJECT_DIR / "src/pdm/models/python_max_versions.json")
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