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updated error message #448

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updated error message #448

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8 changes: 5 additions & 3 deletions pycytominer/cyto_utils/features.py
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Original file line number Diff line number Diff line change
Expand Up @@ -115,9 +115,11 @@ def infer_cp_features(
population_df.columns.str.startswith("Metadata_")
].tolist()

assert ( # noqa: S101
len(features) > 0
), "No CP features found. Are you sure this dataframe is from CellProfiler?"
if len(features) == 0:
raise ValueError(
"No features found. Pycytominer expects CellProfiler features by default. "
"If you're using non-CellProfiler data, please specify the feature space using the `features` parameter."
)

return features

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