ImportError No module name drone_status

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Hello,

I am just starting out with learning ROS. I tried simulating the Ardrone, using the tum simulator on ROS Indigo and Gazebo2. Ref: https://github.com/dougvk/tum_simulator

I am trying to implement this code - https://github.com/amroygaol/AR_Drone... . I followed through the instructions, however, I keep getting an error,

ImportError:No module named drone_status.

I can control the drone by directly publishing on the terminal, although, I cannot do it using the python script.

Can you please help me out?