Change error message in to_root when two columns have the same name

scikit-hep / root_pandas

A Python module for conveniently loading/saving ROOT files as pandas DataFrames

MIT License

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Closed marthaisabelhilton closed 5 years ago

marthaisabelhilton commented 5 years ago

Current error message is: ValueError: name already used as a name or title

eduardo-rodrigues commented 5 years ago

@marthaisabelhilton, do you want to go ahead and create a PR with a suggested improvement?