[sarankumar1325]

Closes #727

Proposed Changes

FluxCsvParser applied the #default annotation row as soon as it was read, but the table columns are only created by the #datatype row. If #default came before #datatype, add_default_empty_values looped over an empty column list and the defaults were lost, so empty cells were parsed as None.

The parser already keeps #group until the column-name row, so #default now works the same way: the row is stored in the parser metadata and applied when the column names are parsed. It is reset when a new table starts, so one table's defaults don't carry over to the next. The usual #datatype, #group, #default order gives the same result as before.

Tests in tests/test_FluxCSVParser.py:

• test_default_annotation_before_datatype: the reproduction from the issue (string and long defaults)
• test_default_annotation_before_datatype_more_tables: several tables with different annotation orders, and a check that defaults don't leak into a table without #default

Both fail on master and pass with the change. The rest of test_FluxCSVParser.py passes, the httpretty-based test_QueryApi.py/test_QueryApiDataFrame.py results are the same before and after (the only failures need a running InfluxDB), and flake8 plus pydocstyle are clean on the changed file.

I used an AI coding assistant for this change and reviewed and tested it myself.

Checklist

• CHANGELOG.md updated
• Rebased/mergeable
• A test has been added if appropriate
• pytest tests completes successfully (unit tests pass; integration tests need a running InfluxDB)
• Commit messages are conventional
• Sign CLA (if not already signed)

[chatgpt-codex-connector]

Codex Review Summary

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Review	Status	Commit	Review trigger
📝 Code Review	⚠️ Failed 2026-10-30T11:02:56.638494Z We couldn’t complete this review. Comment @codex review to try again.	8a75234	PR opened

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.47%. Comparing base (1865aca) to head (18f4114).
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Additional details and impacted files

@@            Coverage Diff             @@
##           master     #732      +/-   ##
==========================================
+ Coverage   90.43%   90.47%   +0.03%     
==========================================
  Files          41       41              
  Lines        3577     3589      +12     
==========================================
+ Hits         3235     3247      +12     
  Misses        342      342              

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[karel-rehor]

All tests pass in local venv for me.

N.B. started local development and test instance for integration tests with scripts/influxdb-restart.sh

Looks good to me as well. 🚴 🏁