[issue18219] csv.DictWriter is slow when writing files with large number of columns

[Mariatta Wijaya]

Mariatta Wijaya added the comment:

Thanks David. I uploaded patch to address your concern with the docs.
Can you please check?

Serhiy, with regards to applying docs and test to 3.5, does that require a different patch than what I have?

Thanks.

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Added file: http://bugs.python.org/file45176/issue18219v9.patch

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