plot.py 文件源码

def check_queue(self):
        """Timer callback to check command queue"""
        try:
            while True:
                window_size = turtle.window_width(), turtle.window_height()
                if self.window_size != window_size:
                    self.redraw()
                    turtle.ontimer(self.check_queue, 200)
                    break
                cmd = self.queue.get_nowait()
                cmd()
                if cmd == self.do_close:
                    break
        except queue.Empty:
            turtle.ontimer(self.check_queue, 100)
        except turtle.Terminator:
            pass
        except KeyboardInterrupt:
            turtle.bye()