Not able to build Image Repo

[koruthu]

While trying to build Image Repo I am getting the following error

vijin@INL0195:~/uptane$ import demo.demo_oem_repo as do
import-im6.q16: not authorized `do' @ error/constitute.c/WriteImage/1037.
Could you give some solution?

[awwad]

This implementation is in Python. There's no C in it. Can you link me to the code you're using.....?