PermissionError: [Errno 13] Permission denied: '/dev/input/event3'

[yongpan0715]

Traceback (most recent call last):
File "/home/panyong/anaconda3/envs/catalystenv/lib/python3.7/site-packages/inputs.py", line 2456, in _character_device
self._character_device_path, 'rb')
PermissionError: [Errno 13] Permission denied: '/dev/input/event3'