Serhiy Storchaka added the comment: It is not consistent with reader and writer. I propose to close the issue as "won't fix" or change the argument name in the sources. Unfortunately, Python syntax does not allow to specify the positional-only arguments. ---------- keywords: +patch nosy: +storchaka Added file: http://bugs.python.org/file27339/csv_csvfile_arg.patch _______________________________________ Python tracker <report at bugs.python.org> <http://bugs.python.org/issue16026> _______________________________________