python 多機分布 錯誤提示：During handling of the above exception, another exception occurred: 解決方法

During handling of the above exception, another exception occurred:

處理方法：

cmd:netstat -ano
找到被占用的端口，找右邊對應的PID 5062
tasklist|findstr "5062"
顯示對應的進程名稱：pythow.exe
打開任務管理器，關閉相應的進程即可

if __name__=='__main__':
    freeze_support()
    print('start!')
    #global connect,con
    connect = pymysql.connect(user = 'O',
                password = 'h',
                db = 'xi',
                host = 'r',
                port = 3306,
                charset = 'utf8'
                )
    con = connect.cursor()
    QueueManager.register('get_task_queue', callable=return_task_queue)
    QueueManager.register('get_result_queue', callable=return_result_queue)
    # 綁定端口5000, 設置驗證碼'abc':
    #manager = QueueManager(address=('', 5000), authkey=b'abc')
    # windows需要寫ip地址
    manager = QueueManager(address=('192.168.1.254', 5006), authkey=b'abc')
    manager.start()  # 啟動Queue:
    # 獲得通過網絡訪問的Queue對象:
    task = manager.get_task_queue()
    result = manager.get_result_queue()