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

[Mariatta Wijaya]

Mariatta Wijaya added the comment:

Hello, please review my patch.

I used set subtraction to calculate wrong_fields, added more test cases, and clarify documentation with regards to extrasaction parameter.

Please let me know if this works.

Thanks :)

----------
nosy: +Mariatta
Added file: http://bugs.python.org/file45167/issue18219.patch

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue18219>
_______________________________________