Raspberry pi Raspberry PI 4 RPi.GPIO库不'；我不能在Ubuntu 20.10上工作

我在Raspberry Pi 4 4GB上使用Ubuntu 20.10，但在我的代码终端上使用RPi.GPIO库会向我显示以下信息：

“GPIO.setup（INT，GPIO.IN，pull\u up\u down=GPIO.PUD\u up） 运行时错误：未在RPi上运行！”

代码如下：

#!/usr/bin/env python2.7
import RPi.GPIO as GPIO
import subprocess
from time import sleep

GPIO.setmode(GPIO.BCM) # use GPIO numbering
GPIO.setwarnings(False)
print('RPi.GPIO:',GPIO.VERSION)

INT = 12    # GPIO-12 button interrupt to shutdown procedure

# use a weak pull_up to create a high
GPIO.setup(INT, GPIO.IN, pull_up_down=GPIO.PUD_UP)

def main():

     while True:
      # set an interrupt on a falling edge and wait for it to happen
      GPIO.wait_for_edge(INT, GPIO.FALLING)
      # we got here because the button was pressed.
      # wait for 3 seconds to see if this was deliberate
      sleep(3)
      # check the button level again
      if GPIO.input(INT) == 0:
      # still pressed, it must be a serious request; shutdown Pi
          subprocess.call(['poweroff'], shell=True, \
          stdout=subprocess.PIPE, stderr=subprocess.PIPE)


if __name__ == '__main__':
      main()

我找不到代码的错误，Ubuntu和这个库之间有什么问题吗

---

非常感谢你

是否允许您的用户访问GPIO？如果没有，您必须先执行

sudo adduser username gpio

，这就是问题所在，非常感谢！