swev-id: astropy__astropy-14365 - ascii.qdp: accept lowercase/mixed-case QDP commands (READ SERR/TERR)

[casey-brooks]

Summary

• make the READ SERR/TERR command pattern case-insensitive with a scoped inline flag
• add regression coverage reading lowercase directives to confirm error column parsing

Testing

• SETUPTOOLS_USE_DISTUTILS=stdlib PYTHONPATH=. LD_LIBRARY_PATH=/nix/store/wffgswxkp55xi14jy63rjsnfvl2qvmxy-gcc-14.3.0-lib/lib:/nix/store/qipd93x9gjyiygqk673rd2ssnf8y7jj0-gcc-14.3.0-lib/lib:/nix/store/zmjqwzhgl9hwr8xnk8raj8d50lzkql66-gcc-14.3.0-lib/lib:/nix/store/n5lymg0y5x6i9wipkjrsi8aczv1nr4qc-zlib-1.3.1/lib .venv/bin/python -m pytest astropy/io/ascii/tests/test_qdp.py
• SETUPTOOLS_USE_DISTUTILS=stdlib PYTHONPATH=. LD_LIBRARY_PATH=/nix/store/wffgswxkp55xi14jy63rjsnfvl2qvmxy-gcc-14.3.0-lib/lib:/nix/store/qipd93x9gjyiygqk673rd2ssnf8y7jj0-gcc-14.3.0-lib/lib:/nix/store/zmjqwzhgl9hwr8xnk8raj8d50lzkql66-gcc-14.3.0-lib/lib:/nix/store/n5lymg0y5x6i9wipkjrsi8aczv1nr4qc-zlib-1.3.1/lib .venv/bin/flake8 astropy/io/ascii/qdp.py astropy/io/ascii/tests/test_qdp.py --per-file-ignores='astropy/units/tests/test_units.py:F841,E501,E711,E222'

Reproduction

# Create test.qdp
read serr 1 2
1 0.5 1 0.5

Observed error

>>> from astropy.table import Table
>>> Table.read('test.qdp', format='ascii.qdp')
WARNING: table_id not specified. Reading the first available table [astropy.io.ascii.qdp]
Traceback (most recent call last):
...
ValueError: Unrecognized QDP line: read serr 1 2

Fixes #115

[casey-brooks]

Test & Lint Summary

• SETUPTOOLS_USE_DISTUTILS=stdlib PYTHONPATH=. LD_LIBRARY_PATH=/nix/store/wffgswxkp55xi14jy63rjsnfvl2qvmxy-gcc-14.3.0-lib/lib:/nix/store/qipd93x9gjyiygqk673rd2ssnf8y7jj0-gcc-14.3.0-lib/lib:/nix/store/zmjqwzhgl9hwr8xnk8raj8d50lzkql66-gcc-14.3.0-lib/lib:/nix/store/n5lymg0y5x6i9wipkjrsi8aczv1nr4qc-zlib-1.3.1/lib .venv/bin/python -m pytest astropy/io/ascii/tests/test_qdp.py → 9 passed (with expected local-install warning about version detection)
• SETUPTOOLS_USE_DISTUTILS=stdlib PYTHONPATH=. LD_LIBRARY_PATH=/nix/store/wffgswxkp55xi14jy63rjsnfvl2qvmxy-gcc-14.3.0-lib/lib:/nix/store/qipd93x9gjyiygqk673rd2ssnf8y7jj0-gcc-14.3.0-lib/lib:/nix/store/zmjqwzhgl9hwr8xnk8raj8d50lzkql66-gcc-14.3.0-lib/lib:/nix/store/n5lymg0y5x6i9wipkjrsi8aczv1nr4qc-zlib-1.3.1/lib .venv/bin/flake8 astropy/io/ascii/qdp.py astropy/io/ascii/tests/test_qdp.py --per-file-ignores='astropy/units/tests/test_units.py:F841,E501,E711,E222' → no issues

[noa-lucent]

Inline-scoping the ignorecase flag keeps the command matcher flexible without affecting other tokens, and the new regression test covers lowercase SERR/TERR directives end-to-end. This resolves #115 for me—thanks!

[rowan-stein]

Closing to enforce single open PR per task (ID: 10). Please refer to PR #121 for the active work.