8000 gh-101100: Docs: Check Sphinx warnings and fail if improved (#106460) · python/cpython@806d7c9 · GitHub
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gh-101100: Docs: Check Sphinx warnings and fail if improved (#106460)
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.github/workflows/reusable-docs.yml

Lines changed: 10 additions & 17 deletions
Original file line numberDiff line numberDiff line change
@@ -28,35 +28,28 @@ jobs:
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cache-dependency-path: 'Doc/requirements.txt'
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- name: 'Install build dependencies'
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run: make -C Doc/ venv
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- name: 'Build HTML documentation'
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run: make -C Doc/ SPHINXOPTS="-q" SPHINXERRORHANDLING="-W --keep-going" html
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# Add pull request annotations for Sphinx nitpicks (missing references)
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# To annotate PRs with Sphinx nitpicks (missing references)
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- name: 'Get list of changed files'
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if: github.event_name == 'pull_request'
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id: changed_files
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uses: Ana06/get-changed-files@v2.2.0
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with:
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filter: "Doc/**"
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format: csv # works for paths with spaces
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- name: 'Build changed files in nit-picky mode'
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if: github.event_name == 'pull_request'
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- name: 'Build HTML documentation'
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continue-on-error: true
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run: |
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set -Eeuo pipefail
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# Mark files the pull request modified
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python Doc/tools/touch-clean-files.py --clean '${{ steps.changed_files.outputs.added_modified }}'
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# Build docs with the '-n' (nit-picky) option; convert warnings to annotations
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make -C Doc/ PYTHON=../python SPHINXOPTS="-q -n --keep-going" html 2>&1 |
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python Doc/tools/warnings-to-gh-actions.py
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# Ensure some files always pass Sphinx nit-picky mode (no missing references)
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- name: 'Build known-good files in nit-picky mode'
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# Build docs with the '-n' (nit-picky) option; write warnings to file
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make -C Doc/ PYTHON=../python SPHINXOPTS="-q -n -W --keep-going -w sphinx-warnings.txt" html
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- name: 'Check warnings'
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if: github.event_name == 'pull_request'
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run: |
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# Mark files that must pass nit-picky
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python Doc/tools/touch-clean-files.py
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# Build docs with the '-n' (nit-picky) option, convert warnings to errors (-W)
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make -C Doc/ PYTHON=../python SPHINXOPTS="-q -n -W --keep-going" html 2>&1
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python Doc/tools/check-warnings.py \
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--check-and-annotate '${{ steps.changed_files.outputs.added_modified }}' \
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--fail-if-regression \
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--fail-if-improved
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# This build doesn't use problem matchers or check annotations
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build_doc_oldest_supported_sphinx:

Doc/tools/.nitignore

Lines changed: 2 additions & 9 deletions
Original file line numberDiff line numberDiff line change
@@ -1,7 +1,6 @@
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# All RST files under Doc/ -- except these -- must pass Sphinx nit-picky mode,
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# as tested on the CI via touch-clean-files.py in doc.yml.
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# Add blank lines between files and keep them sorted lexicographically
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# to help avoid merge conflicts.
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# as tested on the CI via check-warnings.py in reusable-docs.yml.
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# Keep lines sorted lexicographically to help avoid merge conflicts.
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65
Doc/c-api/allocation.rst
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Doc/c-api/apiabiversion.rst
@@ -18,7 +17,6 @@ Doc/c-api/complex.rst
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Doc/c-api/conversion.rst
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Doc/c-api/datetime.rst
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Doc/c-api/descriptor.rst
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Doc/c-api/dict.rst
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Doc/c-api/exceptions.rst
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Doc/c-api/file.rst
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Doc/c-api/float.rst
@@ -48,7 +46,6 @@ Doc/c-api/typehints.rst
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Doc/c-api/typeobj.rst
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Doc/c-api/unicode.rst
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Doc/c-api/veryhigh.rst
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Doc/c-api/weakref.rst
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Doc/extending/embedding.rst
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Doc/extending/extending.rst
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Doc/extending/newtypes.rst
@@ -88,8 +85,6 @@ Doc/library/bdb.rst
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Doc/library/bisect.rst
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Doc/library/bz2.rst
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Doc/library/calendar.rst
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Doc/library/cgi.rst
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Doc/library/cmath.rst
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Doc/library/cmd.rst
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Doc/library/code.rst
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Doc/library/codecs.rst
@@ -105,7 +100,6 @@ Doc/library/contextlib.rst
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Doc/library/copy.rst
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Doc/library/csv.rst
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Doc/library/ctypes.rst
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Doc/library/curses.ascii.rst
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Doc/library/curses.rst
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Doc/library/datetime.rst
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Doc/library/dbm.rst
@@ -134,7 +128,6 @@ Doc/library/fractions.rst
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Doc/library/ftplib.rst
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Doc/library/functions.rst
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Doc/library/functools.rst
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Doc/library/getopt.rst
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Doc/library/getpass.rst
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Doc/library/gettext.rst
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Doc/library/graphlib.rst

Doc/tools/check-warnings.py

Lines changed: 149 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,149 @@
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#!/usr/bin/env python3
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"""
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Check the output of running Sphinx in nit-picky mode (missing references).
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"""
5+
import argparse
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import csv
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import os
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import re
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import sys
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from pathlib import Path
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# Exclude these whether they're dirty or clean,
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# because they trigger a rebuild of dirty files.
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EXCLUDE_FILES = {
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"Doc/whatsnew/changelog.rst",
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}
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# Subdirectories of Doc/ to exclude.
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EXCLUDE_SUBDIRS = {
20+
".env",
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".venv",
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"env",
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"includes",
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"venv",
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}
26+
27+
PATTERN = re.compile(r"(?P<file>[^:]+):(?P<line>\d+): WARNING: (?P<msg>.+)")
28+
29+
30+
def check_and_annotate(warnings: list[str], files_to_check: str) -> None:
31+
"""
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Convert Sphinx warning messages to GitHub Actions.
33+
34+
Converts lines like:
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.../Doc/library/cgi.rst:98: WARNING: reference target not found
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to:
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::warning file=.../Doc/library/cgi.rst,line=98::reference target not found
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Non-matching lines are echoed unchanged.
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see:
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https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#setting-a-warning-message
43+
"""
44+
files_to_check = next(csv.reader([files_to_check]))
45+
for warning in warnings:
46+
if any(filename in warning for filename in files_to_check):
47+
if match := PATTERN.fullmatch(warning):
48+
print("::warning file={file},line={line}::{msg}".format_map(match))
49+
50+
51+
def fail_if_regression(
52+
warnings: list[str], files_with_expected_nits: set[str], files_with_nits: set[str]
53+
) -> int:
54+
"""
55+
Ensure some files always pass Sphinx nit-picky mode (no missing references).
56+
These are files which are *not* in .nitignore.
57+
"""
58+
all_rst = {
59+
str(rst)
60+
for rst in Path("Doc/").rglob("*.rst")
61+
if rst.parts[1] not in EXCLUDE_SUBDIRS
62+
}
63+
should_be_clean = all_rst - files_with_expected_nits - EXCLUDE_FILES
64+
problem_files = sorted(should_be_clean & files_with_nits)
65+
if problem_files:
66+
print("\nError: must not contain warnings:\n")
67+
for filename in problem_files:
68+
print(filename)
69+
for warning in warnings:
70+
if filename in warning:
71+
if match := PATTERN.fullmatch(warning):
72+
print(" {line}: {msg}".format_map(match))
73+
return -1
74+
return 0
75+
76+
77+
def fail_if_improved(
78+
files_with_expected_nits: set[str], files_with_nits: set[str]
79+
) -> int:
80+
"""
81+
We may have fixed warnings in some files so that the files are now completely clean.
82+
Good news! Let's add them to .nitignore to prevent regression.
83+
"""
84+
files_with_no_nits = files_with_expected_nits - files_with_nits
85+
if files_with_no_nits:
86+
print("\nCongratulations! You improved:\n")
87+
for filename in sorted(files_with_no_nits):
88+
print(filename)
89+
print("\nPlease remove from Doc/tools/.nitignore\n")
90+
return -1
91+
return 0
92+
93+
94+
def main() -> int:
95+
parser = argparse.ArgumentParser()
96+
parser.add_argument(
97+
"--check-and-annotate",
98+
help="Comma-separated list of files to check, "
99+
"and annotate those with warnings on GitHub Actions",
100+
)
101+
parser.add_argument(
102+
"--fail-if-regression",
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action="store_true",
104+
help="Fail if known-good files have warnings",
105+
)
106+
parser.add_argument(
107+
"--fail-if-improved",
108+
action="store_true",
109+
help="Fail if new files with no nits are found",
110+
)
111+
args = parser.parse_args()
112+
exit_code = 0
113+
114+
wrong_directory_msg = "Must run this script from the repo root"
115+
assert Path("Doc").exists() and Path("Doc").is_dir(), wrong_directory_msg
116+
117+
with Path("Doc/sphinx-warnings.txt").open() as f:
118+
warnings = f.read().splitlines()
119+
120+
cwd = str(Path.cwd()) + os.path.sep
121+
files_with_nits = {
122+
warning.removeprefix(cwd).split(":")[0]
123+
for warning in warnings
124+
if "Doc/" in warning
125+
}
126+
127+
with Path("Doc/tools/.nitignore").open() as clean_files:
128+
files_with_expected_nits = {
129+
filename.strip()
130+
for filename in clean_files
131+
if filename.strip() and not filename.startswith("#")
132+
}
133+
134+
if args.check_and_annotate:
135+
check_and_annotate(warnings, args.check_and_annotate)
136+
137+
if args.fail_if_regression:
138+
exit_code += fail_if_regression(
139+
warnings, files_with_expected_nits, files_with_nits
140+
)
141+
142+
if args.fail_if_improved:
143+
exit_code += fail_if_improved(files_with_expected_nits, files_with_nits)
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return exit_code
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147+
148+
if __name__ == "__main__":
149+
sys.exit(main())

Doc/tools/touch-clean-files.py

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This file was deleted.

Doc/tools/warnings-to-gh-actions.py

Lines changed: 0 additions & 25 deletions
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