WriteTable

WriteTable persists an upstream workflow table to disk while passing the table through unchanged for downstream nodes.

Inputs

• upstream table: pandas DataFrame from a previous table tool.

• path: output CSV, TSV, or TAB file path.

Files ending in .csv are written with comma separators; files ending in .tsv or .tab are written with tab separators. Parent directories are created automatically.

Outputs

• written table path: the file at path.

• downstream table: the same DataFrame, passed through unchanged.

Minimal Example

from bioimageflow_core import Arguments
from bioimageflow_common_tools import WriteTable

result = WriteTable().transform(df, Arguments(path="results/measurements.tsv"))

Dependencies and Core Libraries

pandas and pathlib.

Assumptions

The upstream value is a pandas DataFrame and should be written without an index column.

Expected Results

The output path contains the table in CSV or TSV form. The returned DataFrame matches the upstream table.

Failure Modes

Unsupported suffixes raise ValueError. Permission errors and invalid directories fail through pathlib or pandas.