how to fix this problem when start sw_dumper.py?

i try to extract .cas file in Mirror’s Edge Catalyst like this forum: http://forum.xentax.com/viewtopic.php?f=10&t=14269 . but i have this problem: http://imgur.com/a/aHkMY . and here is my python file : https://www.sendspace.com/file/okl9ti . please help.

This is not funny anymore. Please go away.