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Diffstat (limited to 'Doc/library/csv.rst')
| -rw-r--r-- | Doc/library/csv.rst | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/Doc/library/csv.rst b/Doc/library/csv.rst index 6341bc3..f916572 100644 --- a/Doc/library/csv.rst +++ b/Doc/library/csv.rst @@ -195,10 +195,12 @@ The :mod:`csv` module defines the following classes: written if the dictionary is missing a key in *fieldnames*. If the dictionary passed to the :meth:`writerow` method contains a key not found in *fieldnames*, the optional *extrasaction* parameter indicates what action to - take. If it is set to ``'raise'`` a :exc:`ValueError` is raised. If it is - set to ``'ignore'``, extra values in the dictionary are ignored. Any other - optional or keyword arguments are passed to the underlying :class:`writer` - instance. + take. + If it is set to ``'raise'``, the default value, a :exc:`ValueError` + is raised. + If it is set to ``'ignore'``, extra values in the dictionary are ignored. + Any other optional or keyword arguments are passed to the underlying + :class:`writer` instance. Note that unlike the :class:`DictReader` class, the *fieldnames* parameter of the :class:`DictWriter` is not optional. Since Python's :class:`dict` |