HELP needed: Tricks for licensing Python software

[Pekka Niiranen]

Has anybody tried to implement license key
for Python script in Windows ?

For example, distributed Python program
could be tied to the MAC address of the PC:
Before program could be used, the user must
give the MAC address of his PC that is used
as seed for generating license key for the software.
Thus, the program could not be run on any other
machine without installing the same
network card to it.

I would hate to learn writing C extensions
just for this. Any ideas ?

-pekka-