Wes McKinney created ARROW-7973:
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Summary: [Developer][C++] ResourceWarnings in run_cpplint.py
Key: ARROW-7973
URL: https://issues.apache.org/jira/browse/ARROW-7973
Project: Apache Arrow
Issue Type: Bug
Components: C++, Developer Tools
Reporter: Wes McKinney
Fix For: 1.0.0
Seeing warnings like this locally
{code}
$ ninja lint
[1/1] cd /home/wesm/code/arrow/cpp/preflight...ce_dir
/home/wesm/code/arrow/cpp/src --quiet
FAILED: CMakeFiles/lint
cd /home/wesm/code/arrow/cpp/preflight-build &&
/home/wesm/miniconda/envs/arrow-3.7/bin/python
/home/wesm/code/arrow/cpp/build-support/run_cpplint.py --cpplint_binary
/home/wesm/code/arrow/cpp/build-support/cpplint.py --exclude_globs
/home/wesm/code/arrow/cpp/build-support/lint_exclusions.txt --source_dir
/home/wesm/code/arrow/cpp/src --quiet
/home/wesm/code/arrow/cpp/build-support/run_cpplint.py:77: ResourceWarning:
unclosed file <_io.TextIOWrapper
name='/home/wesm/code/arrow/cpp/build-support/lint_exclusions.txt' mode='r'
encoding='UTF-8'>
for line in open(arguments.exclude_globs):
ResourceWarning: Enable tracemalloc to get the object allocation traceback
/home/wesm/code/arrow/cpp/build-support/cpplint.py:6240: ResourceWarning:
unclosed file <_io.BufferedReader
name='/home/wesm/code/arrow/cpp/src/arrow/compute/kernels/add.h'>
lines = codecs.open(filename, 'r', 'utf8', 'replace').read().split('\n')
ResourceWarning: Enable tracemalloc to get the object allocation traceback
/home/wesm/code/arrow/cpp/build-support/cpplint.py:6240: ResourceWarning:
unclosed file <_io.BufferedReader
name='/home/wesm/code/arrow/cpp/src/arrow/compute/kernels/util_internal.h'>
lines = codecs.open(filename, 'r', 'utf8', 'replace').read().split('\n')
ResourceWarning: Enable tracemalloc to get the object allocation traceback
{code}
I was using {{PYTHONDEVMODE=1}} so this may be related
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