Press esc to stop and any other key to continue in Python

问题

Now with help of raw_input, I can call a method every time user presses Enter.

if __name__ == '__main__':
    while True:
        raw_input("Press Enter to continue...")
        _start()
def _start():
     print("HelloWorld")

There is a problem because only Ctrl + C, the program can be stopped. As you see, I make my program to wait user to press key.

From opencv, I find there is a similar need.

# Hit 'q' on the keyboard to quit!
if cv2.waitKey(1) & 0xFF == ord('q'):
    break

Simply I want to press esc key to exit program and press any other key to continue. So there is any way to do like this?

In Addition

My os is OSX.

回答1:

you can use pynput,it's easier to use.

from pynput import keyboard

def _start():
     print("HelloWorld")
def on_press(key):
    if key == keyboard.Key.esc:
        # Stop listener
        return False
    else:
        _start()

# Collect events until released
with keyboard.Listener(
        on_press=on_press) as listener:
    listener.join()

回答2:

Your best bet is probably go the curses way.

import curses

def main():
    stdscr = curses.initscr()
    while True:
        key = stdscr.getch()
        if key == 27: # This is the escape key code
             curses.endwin()
             break

main()

来源：https://stackoverflow.com/questions/48787563/press-esc-to-stop-and-any-other-key-to-continue-in-python