[3.13] Docs: Ensure no warnings are found in the NEWS file before a g…

…iven line number (pythonGH-119221)

(cherry picked from commit 034cf0c)

Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>

.github/workflows/reusable-docs.yml

@@ -62,7 +62,8 @@ jobs:
         python Doc/tools/check-warnings.py \
           --annotate-diff '${{ env.branch_base }}' '${{ env.branch_pr }}' \
           --fail-if-regression \
-          --fail-if-improved
+          --fail-if-improved \
+          --fail-if-new-news-nit
 
   # This build doesn't use problem matchers or check annotations
   build_doc_oldest_supported_sphinx:

Doc/tools/check-warnings.py

@@ -13,6 +13,9 @@
 from pathlib import Path
 from typing import TextIO
 
+# Fail if NEWS nit found before this line number
+NEWS_NIT_THRESHOLD = 200
+
 # Exclude these whether they're dirty or clean,
 # because they trigger a rebuild of dirty files.
 EXCLUDE_FILES = {
@@ -245,6 +248,32 @@ def fail_if_improved(
     return 0
 
 
+def fail_if_new_news_nit(warnings: list[str], threshold: int) -> int:
+    """
+    Ensure no warnings are found in the NEWS file before a given line number.
+    """
+    news_nits = (
+        warning
+        for warning in warnings
+        if "/build/NEWS:" in warning
+    )
+
+    # Nits found before the threshold line
+    new_news_nits = [
+        nit
+        for nit in news_nits
+        if int(nit.split(":")[1]) <= threshold
+    ]
+
+    if new_news_nits:
+        print("\nError: new NEWS nits:\n")
+        for warning in new_news_nits:
+            print(warning)
+        return -1
+
+    return 0
+
+
 def main(argv: list[str] | None = None) -> int:
     parser = argparse.ArgumentParser()
     parser.add_argument(
@@ -264,6 +293,14 @@ def main(argv: list[str] | None = None) -> int:
         action="store_true",
         help="Fail if new files with no nits are found",
     )
+    parser.add_argument(
+        "--fail-if-new-news-nit",
+        metavar="threshold",
+        type=int,
+        nargs="?",
+        const=NEWS_NIT_THRESHOLD,
+        help="Fail if new NEWS nit found before threshold line number",
+    )
 
     args = parser.parse_args(argv)
     if args.annotate_diff is not None and len(args.annotate_diff) > 2:
@@ -304,6 +341,9 @@ def main(argv: list[str] | None = None) -> int:
     if args.fail_if_improved:
         exit_code += fail_if_improved(files_with_expected_nits, files_with_nits)
 
+    if args.fail_if_new_news_nit:
+        exit_code += fail_if_new_news_nit(warnings, args.fail_if_new_news_nit)
+
     return exit_code
 
 

Lib/_colorize.py

@@ -6,9 +6,11 @@
 
 
 class ANSIColors:
+    BLUE = "\x1b[1;34m"
     BOLD_GREEN = "\x1b[1;32m"
     BOLD_MAGENTA = "\x1b[1;35m"
     BOLD_RED = "\x1b[1;31m"
+    CYAN = "\x1b[36m"
     GREEN = "\x1b[32m"
     GREY = "\x1b[90m"
     MAGENTA = "\x1b[35m"

Lib/traceback.py

@@ -185,7 +185,7 @@ def _format_final_exc_line(etype, value, *, insert_final_newline=True, colorize=
         if value is None or not valuestr:
             line = f"{ANSIColors.BOLD_MAGENTA}{etype}{ANSIColors.RESET}{end_char}"
         else:
-            line = f"{ANSIColors.BOLD_MAGENTA}{etype}{ANSIColors.RESET}: {ANSIColors.MAGENTA}{valuestr}{ANSIColors.RESET}{end_char}"
+            line = f"{ANSIColors.BOLD_MAGENTA}{etype}{ANSIColors.RESET}: {ANSIColors.CYAN}{valuestr}{ANSIColors.RESET}{end_char}"
     else:
         if value is None or not valuestr:
             line = f"{etype}{end_char}"

Misc/NEWS.d/next/Core and Builtins/2024-05-07-16-57-56.gh-issue-118561.wNMKVd.rst

@@ -1,2 +1,2 @@
-Fix race condition in free-threaded build where :meth:`list.extend` could expose
-uninitialied memory to concurrent readers.
+Fix race condition in free-threaded build where :meth:`!list.extend` could
+expose uninitialised memory to concurrent readers.

Misc/NEWS.d/next/Library/2023-04-10-00-04-37.gh-issue-87106.UyBnPQ.rst

@@ -1,3 +1,3 @@
-Fixed handling in :meth:`inspect.signature.bind` of keyword arguments having
+Fixed handling in :meth:`inspect.Signature.bind` of keyword arguments having
 the same name as positional-only arguments when a variadic keyword argument
 (e.g. ``**kwargs``) is present.