fix: better error message for column missing or empty

[dlaehnemann]

Summary by CodeRabbit

• Bug Fixes
  • Improved error messages to display the exact conflicting values found, making it easier to identify issues when multiple values are present for a given sample, unit, and column.

[coderabbitai]

Walkthrough

The change updates the error message in the column_missing_or_empty function within the workflow rules. When a ValueError is triggered due to multiple values found for a specific sample, unit, and column, the new error message now includes the actual conflicting values from the dataframe. Additionally, debug print statements were added to output the entire dataframe and the result of the null check for the specified sample, unit, and column. No changes were made to function signatures or public interfaces; the update is limited to internal error reporting and debugging.

Changes

File(s)	Change Summary
workflow/rules/common.smk	Added debug print statements in column_missing_or_empty to show dataframe and null check results; updated error message to display actual conflicting values found.

Poem

A rabbit hopped through columns wide,
And found some values side by side.
Now when errors come to light,
The message shows what's not quite right.
With clearer words and data, too—
Debugging's now less askew! 🐇

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📥 Commits

Reviewing files that changed from the base of the PR and between 3d51ebf and a3148ab.

📒 Files selected for processing (1)

• workflow/rules/common.smk (1 hunks)

🚧 Files skipped from review as they are similar to previous changes (1)

• workflow/rules/common.smk

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[dlaehnemann]

Turned out to be unrelated, a doubling of another sample set in the units.tsv.