Working with the new Bluetooth Sockets in Python 3.x you will need to determine the OS X Bluetooth Mac Address of your system.
At a terminal command prompt type the following:
networksetup -listallhardwareports
You should see listings similar to the following:
Hardware Port: Bluetooth PAN
Device: en2
Ethernet Address: cc:44:88:25:66:d3
The Mac address in the “Ethernet Address” value, “cc:44:88:25:66:d3” in this example.