修改IP后链接DB报错，如何解决？ #7
Description
修改IP后链接DB报错，如何解决？
pymysql.err.OperationalError: (2003, "Can't connect to MySQL server on '192.168.1.47' ([WinError 10061] 由于目标计算机积极拒绝，无法连接。)")
Exception ignored in: <function MysqlDb.del at 0x000001FF10F9BD00>
Traceback (most recent call last):
File "E:\Code\flaskDemo\common\mysql_operate.py", line 21, in del
AttributeError: 'MysqlDb' object has no attribute 'cur'