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

[Hugh Brown]

Hugh Brown added the comment:

Mariatta:

Yes, that is what I was thinking of.

That takes my 12 execution time down to 10 seconds. (Or, at least, a fix I did of this nature had that effect -- I have not timed your patch but it should be the same.)

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<http://bugs.python.org/issue18219>
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