Raspberry PI 4 RPi.GPIO 库在 Ubuntu 20.10 上不起作用

如何解决Raspberry PI 4 RPi.GPIO 库在 Ubuntu 20.10 上不起作用

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 库向我显示此消息：

"GPIO.setup(INT,GPIO.IN,pull_up_down=GPIO.PUD_UP) 运行时错误：未在 RPi 上运行！”

这是代码：

#!/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,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和这个库之间有问题吗？

非常感谢！