Getting a unique hardware ID with Python

Question

I have a process that requires me to identify different machines, and I\'m not sure what\'s the best way to do it. I do not want to save that ID on a text file or something,

Answer 1

For windows this seems to get same uuid every time por each device based on the MAC address:

str(uuid.uuid1(uuid.getnode(),0))[24:]

But it does not seem to keep same ID on Android 4.4.2.