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[SPARK-25270] lint-python: Add flake8 to find syntax errors and undefined names #22266

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cclauss wants to merge 4 commits into from
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[SPARK-25270] lint-python: Add flake8 to find syntax errors and undefined names #22266

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lint-python: Add flake8 tests to find Python syntax errors and undefi…
Aug 29, 2018
c8c0543
Remove: python -m pip install flake8
Aug 30, 2018
b87c49e
--max-line-length=100 and remove second round of tests
Aug 31, 2018
786d0c9
Add flake8==3.5.0 to spark/dev/requirements.txt
Aug 31, 2018
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19 changes: 19 additions & 0 deletions dev/lint-python
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Expand Up @@ -82,6 +82,25 @@ else
rm "$PYCODESTYLE_REPORT_PATH"
fi

# stop the build if there are Python syntax errors or undefined names
flake8 . --count --select=E901,E999,F821,F822,F823 --show-source --statistics
flake8_status="${PIPESTATUS[0]}"
# exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics

if [ "$flake8_status" -eq 0 ]; then
lint_status=0
else
lint_status=1
fi

if [ "$lint_status" -ne 0 ]; then
echo "flake8 checks failed."
exit "$lint_status"
else
echo "flake8 checks passed."
fi

# Check that the documentation builds acceptably, skip check if sphinx is not installed.
if hash "$SPHINXBUILD" 2> /dev/null; then
cd python/docs
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