Original code copyright (C) 2009-2022 Rudolf Cardinal (

This file is part of cardinal_pythonlib.

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Command-line tool to merge multiple comma-separated value (CSV) or tab-separated value (TSV) files, as long as they don’t have incompatible headers.[source]

Command-line processor. See --help for details. ~typing.List[str], outfile: ~typing.TextIO = <_io.TextIOWrapper name='<stdout>' mode='w' encoding='utf-8'>, input_dialect: str = 'excel', output_dialect: str = 'excel', debug: bool = False, headers: bool = True) None[source]

Amalgamate multiple CSV/TSV/similar files into one.

  • filenames – list of filenames to process

  • outfile – file-like object to write output to

  • input_dialect – dialect of input files, as passed to csv.reader

  • output_dialect – dialect to write, as passed to csv.writer

  • debug – be verbose?

  • headers – do the files have header lines?