How to stop loop on click of inline button in aiogram?

Question

Python

I have 2 inline buttons. One starts the cycle, and the other must stop it.

bot.py

loop = StartLoop()
if call.data == 'start_loop':
    loop.start()
elif call.data == 'stop_loop':
    loop.stop()

loopbot.py

class StartLoop():
    def __init__(self):
        self.loopflag = True
    def start(self):
        while self.loopflag:
            <do something>
    def stop(self):
        self.loopflag = False

How to make this construction work without using global variables?

Answer 1

Do you have a multi-threaded bot? Because otherwise the only main thread will be busy with the cycle, and the bot will have no time to communicate with the cart server.