Install
As Guy is available in Pypi, simply :
$ python3 -m pip install guy
Note that Tornado is the unique dependancy. (but you'll need kivy, if you plan to release an android's app)
Info
The guy >=0.3.9 should fix the know bug (py3.8 issue) , with the use of Tornado & python 3.8 on Windows 10 platforms !