From c7d6024ca181de69bc9f172087c1bffc42f4dcc8 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=81lvaro=20Abella=20Bascar=C3=A1n?= Date: Fri, 29 Mar 2019 19:41:05 +0100 Subject: [PATCH] clearer exception message when using index or index_col in read_csv (#4651) --- dask/dataframe/io/csv.py | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/dask/dataframe/io/csv.py b/dask/dataframe/io/csv.py index a9fe2f61bfa..8c5c46a7d4d 100644 --- a/dask/dataframe/io/csv.py +++ b/dask/dataframe/io/csv.py @@ -289,8 +289,8 @@ def read_pandas(reader, urlpath, blocksize=AUTO_BLOCKSIZE, collection=True, if include_path_column and isinstance(include_path_column, bool): include_path_column = 'path' if 'index' in kwargs or 'index_col' in kwargs: - raise ValueError("Keyword 'index' not supported " - "dd.{0}(...).set_index('my-index') " + raise ValueError("Keywords 'index' and 'index_col' not supported. " + "Use dd.{0}(...).set_index('my-index') " "instead".format(reader_name)) for kw in ['iterator', 'chunksize']: if kw in kwargs: