charset problem with file Autogenerated by Thrift

i find maybe a problem with the thrift idl file
i wrote some struct comment in the idl file with chinese characters (Non-ASCII character ).
then i use thrift generated the python code, it doesn't contains the encoding set comment line:

# -*- coding: utf-8 -*-

when i try to run the serv code ,it's cause SyntaxError: Non-ASCII character '\xxx' in file

maybe we should make a command line option for user to set the encoding.