无法在树莓派中使用键盘

Question

I'm using a raspberry pi 3A+ and have been trying to use the keyboard for hours. I have written this code:

import keyboard
while True:
    if keyboard.is_pressed("a"):
        print("You pressed 'a'.")
        break

Every time I run it the console just says this long error message:

Traceback (most recent call last):
  File "/home/yesnt/Documents/programming/NICK.py", line 3, in <module>
    if keyboard.is_pressed("a"):
  File "/home/yesnt/.local/lib/python3.9/site-packages/keyboard/__init__.py", line 410, in is_pressed
    _listener.start_if_necessary()
  File "/home/yesnt/.local/lib/python3.9/site-packages/keyboard/_generic.py", line 35, in start_if_necessary
    self.init()
  File "/home/yesnt/.local/lib/python3.9/site-packages/keyboard/__init__.py", line 196, in init
    _os_keyboard.init()
  File "/home/yesnt/.local/lib/python3.9/site-packages/keyboard/_nixkeyboard.py", line 113, in init
    build_device()
  File "/home/yesnt/.local/lib/python3.9/site-packages/keyboard/_nixkeyboard.py", line 109, in build_device
    ensure_root()
  File "/home/yesnt/.local/lib/python3.9/site-packages/keyboard/_nixcommon.py", line 174, in ensure_root
    raise ImportError('You must be root to use this library on linux.')
ImportError: You must be root to use this library on linux.

I have only started playing with the raspberry today, so I still don't know a lot of things. Can anyone help me fix this? Also I'm trying to use it for a circuit to turn on and off a LED, but I think it won't have any interference on that. Thanks

I've installed the keyboard in every single way shape and form, but nothing. install keyboard, pip install keyboard, pip3 install keyboard, sudo pip3 install keyboard,....

Answer 1

You do not have permission to access raw devices in /dev/input/input* , that is documented in the package you use: https://pypi.org/project/keyboard/

You could run your program as root (sudo myProgram.py) or check the permission of the input devices this script want to access. I checked my linux machine and the devices are owned by root and group input , so it could be a solution to add the group input to your user. But you have to check the permission on YOUR raspberry pi.