python-prctl | Wrapping prctl for python

I've been working on a program to access an iBeacon data over bluetooth on my Pi 3 running ubuntu mate 16.04 with out the use of sudo so it can be called from another script. My code works fine when I initialise the class in the if__name__=="__main__": section?? (not sure of the exact name)

Problem when I created the ibeacon class to allow the program to be called from another script using a single line I cannot seem to access the device even though the two setups are identical as far as I can see.

Here is the full code, if you want to run it you will need pctrl and bluepy to install them use sudo apt-get install python-prctl and sudo pip install bluepy and lastly change the permission of bluesy-helper executable using sudo chmod 4755 bluepy-helper to remove the need for sudo to access the bluetooth module. I also added pi ALL= NOPASSWD: /home/pi/python/ibeacon.py to the last line of visudo but not sure if that is necessary.

when mode = 0 it will not work but, using mode = 1 will, I cannot nut it out, please help!