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Apparently code is not working

I'm trying to use Your code, but I'm stuck right at the beginning.

The following test code (along with several variations):

from pathlib import Path
from pyhidraw import HIDRaw


def get_devices():
    paths = sorted([f for f in Path('/dev/input').iterdir() if f.name.startswith('event')],
                   key=lambda f: int(f.name.replace('event', '')))
    devices = []
    for f in paths:
        with f.open() as fd:
            dev = HIDRaw(fd)
            name = dev.getName()
            desc = dev.getRawReportDescriptor()
        devices.append((str(f), name, desc))
    return devices


dd = get_devices()
for d in dd:
    print(d)

bombs with the following error:

/usr/bin/python3.5 /home/valeria/MyProject/VoCore/trasmissione-telematica/Communications/Client/hidraw.py
Traceback (most recent call last):
  File "/home/valeria/MyProject/VoCore/trasmissione-telematica/Communications/Client/hidraw.py", line 18, in <module>
    dd = get_devices()
  File "/home/valeria/MyProject/VoCore/trasmissione-telematica/Communications/Client/hidraw.py", line 12, in get_devices
    name = dev.getName()
  File "/home/valeria/MyProject/VoCore/trasmissione-telematica/Communications/Client/pyhidraw.py", line 93, in getName
    self._ioctl(_HIDIOCGRAWNAME(length), name, True)
  File "/home/valeria/MyProject/VoCore/trasmissione-telematica/Communications/Client/pyhidraw.py", line 59, in _ioctl
    result = fcntl.ioctl(self._device, func, arg, mutate_flag)
OSError: [Errno 22] Invalid argument

Process finished with exit code 1

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