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GH-136155: Fail the EPUB check on fatal errors #137351

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Merged
merged 4 commits into from
Aug 8, 2025
Merged

GH-136155: Fail the EPUB check on fatal errors #137351

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49de8fa
Fail the EPUB check on fatal errors
AA-Turner Aug 3, 2025
b339b4b
Update .github/workflows/reusable-docs.yml
AA-Turner Aug 3, 2025
c7f7ae6
continue-on-error
AA-Turner Aug 3, 2025
8d42d13
cat Doc/epubcheck.txt
AA-Turner Aug 3, 2025
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39 changes: 27 additions & 12 deletions .github/workflows/reusable-docs.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -75,18 +75,6 @@ jobs:
--fail-if-regression \
--fail-if-improved \
--fail-if-new-news-nit
- name: 'Build EPUB documentation'
continue-on-error: true
run: |
set -Eeuo pipefail
make -C Doc/ PYTHON=../python SPHINXOPTS="--quiet" epub
pip install epubcheck
epubcheck Doc/build/epub/Python.epub &> Doc/epubcheck.txt
- name: 'Check for fatal errors in EPUB'
if: github.event_name == 'pull_request'
continue-on-error: true # until gh-136155 is fixed
run: |
python Doc/tools/check-epub.py

# Run "doctest" on HEAD as new syntax doesn't exist in the latest stable release
doctest:
Expand Down Expand Up @@ -114,3 +102,30 @@ jobs:
# Use "xvfb-run" since some doctest tests open GUI windows
- name: 'Run documentation doctest'
run: xvfb-run make -C Doc/ PYTHON=../python SPHINXERRORHANDLING="--fail-on-warning" doctest

check-epub:
name: 'Check EPUB'
runs-on: ubuntu-latest
timeout-minutes: 30
steps:
- uses: actions/checkout@v4
with:
persist-credentials: false
- name: 'Set up Python'
uses: actions/setup-python@v5
with:
python-version: '3'
cache: 'pip'
cache-dependency-path: 'Doc/requirements.txt'
- name: 'Install build dependencies'
run: |
make -C Doc/ venv
python -m pip install epubcheck
- name: 'Build EPUB documentation'
run: make -C Doc/ PYTHON=../python epub
- name: 'Run epubcheck'
continue-on-error: true
run: epubcheck Doc/build/epub/Python.epub &> Doc/epubcheck.txt
- run: cat Doc/epubcheck.txt
- name: 'Check for fatal errors in EPUB'
run: python Doc/tools/check-epub.py
36 changes: 21 additions & 15 deletions Doc/tools/check-epub.py
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Original file line number Diff line number Diff line change
@@ -1,24 +1,30 @@
import sys
from pathlib import Path

CPYTHON_ROOT = Path(
__file__, # cpython/Doc/tools/check-epub.py
'..', # cpython/Doc/tools
'..', # cpython/Doc
'..', # cpython
).resolve()
EPUBCHECK_PATH = CPYTHON_ROOT / 'Doc' / 'epubcheck.txt'

def main() -> int:
wrong_directory_msg = "Must run this script from the repo root"
if not Path("Doc").exists() or not Path("Doc").is_dir():
raise RuntimeError(wrong_directory_msg)

with Path("Doc/epubcheck.txt").open(encoding="UTF-8") as f:
messages = [message.split(" - ") for message in f.read().splitlines()]

fatal_errors = [message for message in messages if message[0] == "FATAL"]
def main() -> int:
lines = EPUBCHECK_PATH.read_text(encoding='utf-8').splitlines()
fatal_errors = [line for line in lines if line.startswith('FATAL')]

if fatal_errors:
print("\nError: must not contain fatal errors:\n")
for error in fatal_errors:
print(" - ".join(error))
err_count = len(fatal_errors)
s = 's' * (err_count != 1)
print()
print(f'Error: epubcheck reported {err_count} fatal error{s}:')
print()
print('\n'.join(fatal_errors))
return 1

return len(fatal_errors)
print('Success: no fatal errors found.')
return 0


if __name__ == "__main__":
sys.exit(main())
if __name__ == '__main__':
raise SystemExit(main())
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