Update versions in README.rst

release.py

@@ -11,6 +11,7 @@
 import datetime
 import glob
 import hashlib
+import json
 import optparse
 import os
 import re
@@ -19,9 +20,11 @@
 import subprocess
 import sys
 import tempfile
+import urllib.request
 from collections.abc import Generator, Sequence
 from contextlib import contextmanager
 from dataclasses import dataclass
+from functools import cache
 from pathlib import Path
 from typing import (
     Any,
@@ -442,19 +445,65 @@ def tweak_patchlevel(
     print("done")
 
 
+@cache
+def get_pep_number(version: str) -> str:
+    """Fetch PEP number for a Python version from the devguide.
+
+    Returns the PEP number as a string, or "TODO" if not found.
+    """
+    url = "https://raw.githubusercontent.com/python/devguide/main/include/release-cycle.json"
+    with urllib.request.urlopen(url, timeout=10) as response:
+        data = json.loads(response.read().decode())
+        if version in data:
+            pep = data[version].get("pep")
+            if pep:
+                return str(pep)
+    return "TODO"
+
+
 def tweak_readme(tag: Tag, filename: str = "README.rst") -> None:
     print(f"Updating {filename}...", end=" ")
     readme = Path(filename)
 
     # Update first line: "This is Python version 3.14.0 alpha 7"
     # and update length of underline in second line to match.
-    lines = readme.read_text().splitlines()
+    content = readme.read_text()
+    lines = content.splitlines()
     this_is = f"This is Python version {tag.long_name}"
     underline = "=" * len(this_is)
     lines[0] = this_is
     lines[1] = underline
+    content = "\n".join(lines)
+
+    DOCS_URL = r"https://docs\.python\.org/"
+    X_Y = r"\d+\.\d+"
+
+    # Replace in: 3.14 <https://docs.python.org/3.14/whatsnew/3.14.html>`_
+    content = re.sub(
+        rf"{X_Y} (<{DOCS_URL}){X_Y}(/whatsnew/){X_Y}(\.html>`_)",
+        rf"{tag.basic_version} \g<1>{tag.basic_version}\g<2>{tag.basic_version}\g<3>",
+        content,
+    )
+
+    # Replace in: `Documentation for Python 3.14 <https://docs.python.org/3.14/>`_
+    content = re.sub(
+        rf"(`Documentation for Python ){X_Y}( <{DOCS_URL}){X_Y}(/>`_)",
+        rf"\g<1>{tag.basic_version}\g<2>{tag.basic_version}\g<3>",
+        content,
+    )
+
+    # Get PEP number for this version
+    pep_number = get_pep_number(tag.basic_version)
+    pep_padded = pep_number.zfill(4) if pep_number != "TODO" else "TODO"
+
+    # Replace in: `PEP 745 <https://peps.python.org/pep-0745/>`__ for Python 3.14
+    content = re.sub(
+        rf"(`PEP )\d+( <https://peps\.python\.org/pep-)\d+(/>`__ for Python ){X_Y}",
+        rf"\g<1>{pep_number}\g<2>{pep_padded}\g<3>{tag.basic_version}",
+        content,
+    )
 
-    readme.write_text("\n".join(lines))
+    readme.write_text(content)
     print("done")
 
 

tests/test_release.py

@@ -71,32 +71,57 @@ def test_tweak_patchlevel(tmp_path: Path) -> None:
 
 
 @pytest.mark.parametrize(
-    ["test_tag", "expected_version", "expected_underline"],
+    [
+        "test_tag",
+        "expected_version",
+        "expected_underline",
+        "expected_whatsnew",
+        "expected_docs",
+        "expected_pep_line",
+    ],
     [
         (
             "3.14.0a6",
             "This is Python version 3.14.0 alpha 6",
             "=====================================",
+            "3.14 <https://docs.python.org/3.14/whatsnew/3.14.html>`_",
+            "`Documentation for Python 3.14 <https://docs.python.org/3.14/>`_",
+            "`PEP 745 <https://peps.python.org/pep-0745/>`__ for Python 3.14",
         ),
         (
             "3.14.0b2",
             "This is Python version 3.14.0 beta 2",
             "====================================",
+            "3.14 <https://docs.python.org/3.14/whatsnew/3.14.html>`_",
+            "`Documentation for Python 3.14 <https://docs.python.org/3.14/>`_",
+            "`PEP 745 <https://peps.python.org/pep-0745/>`__ for Python 3.14",
         ),
         (
             "3.14.0rc2",
             "This is Python version 3.14.0 release candidate 2",
             "=================================================",
+            "3.14 <https://docs.python.org/3.14/whatsnew/3.14.html>`_",
+            "`Documentation for Python 3.14 <https://docs.python.org/3.14/>`_",
+            "`PEP 745 <https://peps.python.org/pep-0745/>`__ for Python 3.14",
         ),
         (
-            "3.14.1",
-            "This is Python version 3.14.1",
+            "3.15.1",
+            "This is Python version 3.15.1",
             "=============================",
+            "3.15 <https://docs.python.org/3.15/whatsnew/3.15.html>`_",
+            "`Documentation for Python 3.15 <https://docs.python.org/3.15/>`_",
+            "`PEP 790 <https://peps.python.org/pep-0790/>`__ for Python 3.15",
         ),
     ],
 )
 def test_tweak_readme(
-    tmp_path: Path, test_tag: str, expected_version: str, expected_underline: str
+    tmp_path: Path,
+    test_tag: str,
+    expected_version: str,
+    expected_underline: str,
+    expected_whatsnew: str,
+    expected_docs: str,
+    expected_pep_line: str,
 ) -> None:
     # Arrange
     tag = release.Tag(test_tag)
@@ -110,8 +135,10 @@ def test_tweak_readme(
     release.tweak_readme(tag, filename=str(readme_file))
 
     # Assert
-    original_lines = original_contents.splitlines()
-    new_lines = readme_file.read_text().splitlines()
+    new_contents = readme_file.read_text()
+    new_lines = new_contents.splitlines()
     assert new_lines[0] == expected_version
     assert new_lines[1] == expected_underline
-    assert new_lines[2:] == original_lines[2:]
+    assert expected_whatsnew in new_contents
+    assert expected_docs in new_contents
+    assert expected_pep_line in new_contents