Warnings found by automatic code inspection and partially tackled
- Drop distuitls inf favour of setuptools
- Replace deprecated pyudev.Device.from_device_number
- Remove unnecessary brackets
- Avoid access to private variables etc.
- Shadows built-in name
- Line length >120 characters
- Not a module level variable
- Simplify clause
and more
The hidapi hardware layer must not know or depend on any UI libraries.
Removes all GDK dependencies from the hidapi packages, which makes
testing of these modules easier and removes unwanted cross-dependencies.
Related #2480
MattHag