class ScreenManager:
    def __init__(self):
        self.now_screen = str()
        
    def set_screen(self,screen_str:str):
        self.now_screen = screen_str
        
    def get_screen(self):
        return self.now_screen
    
    def get_screen_str(self):
        return f"现在千石可乐在和你一起直播，这是他正在操作的屏幕内容：{self.now_screen}"

screen_manager = ScreenManager()