[psittacus]

This[1] comment seems directly opposite from what you wrote, with Python 3.4 (8.76GiB/s) even outrunning Python 2.7 (8.55 GiB/s).

(haven't run the tests myself though)

edit: haven't noticed the comment by dom0.

[1] https://www.reddit.com/r/programming/comments/6gxf02/comment...