从 try/except 块中包含的线程终止程序

Question

can someone help me with terminating this program from if statement. I can't get it done. I've tried to this with sys.quit, but it seems to be not suitable for try/except block and I can't break out of the loop within thread. I could do this in the run() method, but it's a little bit useless to build a thread and then try to do something outside of it. It feels like there is something wrong about it. Here's code:

class TradingBot:

def init(self) -> None:
    self.api = tradeapi.REST(key_id=API_KEY, secret_key=SECRET_KEY, base_url=BASE_URL, api_version='v2')

def simple_thread(self):

    try:
        account = self.api.get_account()
        clock = self.api.get_clock()

        balance_change = float(account.equity) - float(account.last_equity)

        condition_1 = balance_change > 0
        condition_2 = balance_change < 0

        if condition_1:

            pass
            #Figure out something to quit if condition 1 is met

        elif condition_2:

            pass
            #Figure out something to quit if condition 2 is met


    except:

        print('Some error has occured')

def run(self):

    while True:

        execute = threading.Thread(target=self.simple_thread())
        execute.start()
        time.sleep(1)

Answer 1

sys.exit attempts to exit by throwing a SystemExit exception, which is caught by the bare except clause. I'm not sure why you need the try / except at all, but you should probably at least change it to catch only Exception , which, unlikeBaseException , only includes normal exceptions, not special ones such as SystemExit .