如何通过在 Python 3.x 上按一个键来启动和中断循环

Question

I have this code which breaks the loop when pressed the "P" key but the loop is not working unless I press a key that is not "P"

def main():
    openGame()
    while True:
        purchase()
        imageGrab()
        if a.sum() >1200:
            fleaButton()
            time.sleep (0.01)
        grab()
        if b.sum() <=9:
            pressOk()
            time.sleep (0.01)
        if keyboard.read_key() == "p":
            print("Stopping the bot.")
        break


print("Press 'F1' key to stop the bot.")
input("Press enter to start the bot.")

main()

I am a newbie on programming and dont know what to do with this :(

Also, I've been looking for a code that allows me pause the loop when I press a key and continue the loop when I press a key. Thanks in advance.

Answer 1

At first glance, your break statement is not indented properly.

I threw this in repl, and it seemed to work as desired.

import keyboard
while True:
   if keyboard.read_key() == 'p':
      print("stopping")
      break

Answer 2

Try this code and call main() as shown below:

from pynput import keyboard
import time
break_program = True
def on_press(key):
    global break_program
    print (key)
    if key == keyboard.Key.f1 and break_program:
        print ('end pressed')
        break_program = False

    if key == keyboard.Key.enter:
        print ('enter pressed')
        break_program = True


print("Press 'F1' key to stop the bot.")
print("Press enter to start the bot.")

listener =  keyboard.Listener(on_press=on_press)
listener.start()
while True:
    if break_program:
        main()
        time.sleep(1)

You can install this package using pip as pip install pynput

Modify the code as per your needs. Right now it will not start on Enter . You can explore pynput package and customize your code.

Answer 3

maybe try this?

def main():
    openGame()
    while True:
        purchase()
        imageGrab()
        if a.sum() >1200:
            fleaButton()
            time.sleep (0.01)
        grab()
        if b.sum() <=9:
            pressOk()
            time.sleep (0.01)
        if keyboard.read_key() != "p":
            print("Stopping the bot.")
        break


print("Press 'F1' key to stop the bot.")
input("Press enter to start the bot.")

main()

just made it opposite to how it was by changing if keyboard.read_key() == "p": to if keyboard.read_key() != "p": (I haven't tried it myself, but it seems logical).