为什么此python代码中的While循环没有结束？

Question

嗨，我是一个初学者，我正在尝试运行一个while循环，该循环在某个时间发送通知，然后在发送通知后停止运行，但是每次我运行该程序时while循环都没有结束。有人知道为什么吗？这是代码：

def notify():
    with open('task.json') as file:
        data = json.load(file)

    tday = datetime.date.today()

    days = ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday']

    for task in data['Reminder']:
        for day in days:
            if day == task['Date']:
                dateIndex = days.index(day)
                if dateIndex == tday.weekday():
                    comment = f"You are suppose to work on {task['Task']} today"
                    Task.notification(comment)
                    print(f"You are suppose to work on your {task['Task']} on {task['Date']}" )

if __name__ == '__main__':
    while True:
        now = datetime.datetime.now()
        timeAM = f'{now.hour}:{now.minute} AM'
        timePM = f'{now.hour - 12}:{now.minute} PM'
        with open('task.json') as file:
            data = json.load(file)
        for task in data['Reminder']:
            if timeAM == task['Time'] or timePM == task['Time']:
                notify()
                break
            else:
                pass