python + adb implement a physical key press (for example, long press shutdown)

1) Open the CMD, input adb shell getevent> e: /test.txt // This command is used to retrieve the key event corresponding to the event

2) manually click Power button, press ctlr + C key to exit

3) Open the test.txt file and look for event inside, I crawled to the following results:

After 4) Event obtained, we can use it to send commands sendevent command, the specific code as follows

import os
import time

os.system("adb shell sendevent  /dev/input/event0 1 116 1")
os.system("adb shell sendevent  /dev/input/event0 0 0 0")

the time.sleep ( 10) to achieve a long-press operation //

Here we use the sleep function, set waiting for the event to achieve the purpose of long press physical buttons.