在Python中按下按钮时如何自动更改为其他程序

Question

I'd like for my first program to automatically switch over to a second program when a button is pressed.

I tried break and sys.exit() but that put me back at the command line, which I don't want to I'm trying to eliminate having to use the mouse and keyboard to change to a different program.

The programs are for a microcomputer that will be doing the same tasks many times a day; I don't want to have a keyboard or mouse connected after the installation.

Answer 1

You can use the subprocess module for this. Create a Popen object for the script you want triggered, and then exit the parent process without waiting for the child to complete:

import subprocess
import sys

def on_button_pressed():
    subprocess.Popen(["path/to/script", "arg1", "arg2"], shell=False)
    sys.exit()

Answer 2

You may encapsulate the second program in a function, and call the function from your first program. Alternatively, if the second program resides in its own module, you may import that module. Importing the module will execute the code inside of it.