[paulmueller-agent]

A DCNumPipelineJob with a relative path_in and a path_out in a different directory (e.g. path_in="data.rtdc", path_out="sub/out.rtdc") ended in state "error" with

KeyError: "Unable to synchronously open attribute (can't locate attribute: 'experiment:event count')"

raised at assert len(self._data_temp_in) > 0 in DCNumJobRunner.dtin.

Cause: the temporary basin-based input file is created next to the output file, and create_with_basins resolves relative basin paths relative to the file it writes. The relative path_in was stored verbatim as basin path, so it pointed to a non-existent file in the output directory. The file is first created in Background.__init__ (via paths_ref), and DCNumJobRunner.dtin has the same pattern as a fallback.

Fix: use absolute basin paths in both places. The final output file is unaffected; it already stores both relative and absolute paths to the input.

Test: test_basin_relative_path_in_with_path_out_in_other_directory in tests/test_logic_pipeline.py (fails on main with the KeyError above, passes with this change). flake8 is clean and ruff check reports no new findings.

🤖 Generated with Claude Code

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87.61%. Comparing base (531d662) to head (752ffc8).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #60   +/-   ##
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  Coverage   87.61%   87.61%           
=======================================
  Files          63       63           
  Lines        4369     4369           
=======================================
  Hits         3828     3828           
  Misses        541      541           

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