Karthikeyan Singaravelan <tir.kar...@gmail.com> added the comment:
This looks like a good clarification to me where None is clarified that it's the value of restval. DictWriter has a similar doc "The optional restval parameter specifies the value to be written if the dictionary is missing a key in fieldnames" at https://docs.python.org/3/library/csv.html#csv.DictWriter ---------- nosy: +xtreak _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue40013> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com