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DOC: Fix documentation for read_csv's mangle_dupe_cols (GH19203) #19208

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Jan 15, 2018
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DOC: Fix documentation for read_csv's mangle_dupe_cols (GH19203) #19208

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DOC: Fix documentation for read_csv's mangle_dupe_cols (GH19203)
Bernhard10 Jan 12, 2018
918e94a
DOC: Fix mangle_dupe_cols-documentation in io.rst (GH19203)
Bernhard10 Jan 15, 2018
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4 changes: 2 additions & 2 deletions doc/source/io.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -149,7 +149,7 @@ squeeze : boolean, default ``False``
prefix : str, default ``None``
Prefix to add to column numbers when no header, e.g. 'X' for X0, X1, ...
mangle_dupe_cols : boolean, default ``True``
Duplicate columns will be specified as 'X.0'...'X.N', rather than 'X'...'X'.
Duplicate columns will be specified as 'X', 'X.1'...'X.N', rather than 'X'...'X'.
Passing in False will cause data to be overwritten if there are duplicate
names in the columns.

Expand Down Expand Up @@ -548,7 +548,7 @@ these names so as to prevent data overwrite:
pd.read_csv(StringIO(data))

There is no more duplicate data because ``mangle_dupe_cols=True`` by default, which modifies
a series of duplicate columns 'X'...'X' to become 'X.0'...'X.N'. If ``mangle_dupe_cols
a series of duplicate columns 'X'...'X' to become 'X', 'X.1',...'X.N'. If ``mangle_dupe_cols
=False``, duplicate data can arise:

.. code-block :: python
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2 changes: 1 addition & 1 deletion pandas/io/parsers.py
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Expand Up @@ -114,7 +114,7 @@
prefix : str, default None
Prefix to add to column numbers when no header, e.g. 'X' for X0, X1, ...
mangle_dupe_cols : boolean, default True
Duplicate columns will be specified as 'X.0'...'X.N', rather than
Duplicate columns will be specified as 'X', 'X.1', ...'X.N', rather than
'X'...'X'. Passing in False will cause data to be overwritten if there
are duplicate names in the columns.
dtype : Type name or dict of column -> type, default None
Expand Down