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bpo-33798: Update csv document about dict order (GH-7490) 

(cherry picked from commit 6860629d87)

Co-authored-by: Andrés Delfino <adelfino@gmail.com>
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Miss Islington (bot) 2018-06-08 06:33:32 -07:00 committed by GitHub
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Doc/library/csv.rst
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@ -203,9 +203,7 @@ The :mod:`csv` module defines the following classes:
: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`
objects are not ordered, there is not enough information available to deduce
the order in which the row should be written to file *f*.
of the :class:`DictWriter` class is not optional.
A short usage example::