连接远程mySQL服务器失败，我确保MySQL正在运行，Django可以成功连接，但希望连接python与mySQL失败

• python代码（在谷歌colab中运行）

import mysql.connector
mydb = mysql.connector.connect(
  host="196.xxx.xxx.xxx",
  user="xxxxx",
  passwd="xxxxxx", 
  database="Unnamed"  # I tried to put "cloud_db" and "Unnamed" is not work
)
                
mycursor = mydb.cursor()
mycursor.execute("SELECT * FROM webpage")                       
                                         
myresult = mycursor.fetchall()
for row in myresult:
  print(row)

• 误差输出

---------------------------------------------------------------------------
MySQLInterfaceError                       Traceback (most recent call last)
/usr/local/lib/python3.8/dist-packages/mysql/connector/connection_cext.py in _open_connection(self)
    267         try:
--> 268             self._cmysql.connect(**cnx_kwargs)
    269             self._cmysql.converter_str_fallback = self._converter_str_fallback
MySQLInterfaceError: Can't connect to MySQL server on '196.xxx.xxx.xxx:3306' (113)
The above exception was the direct cause of the following exception:
DatabaseError                             Traceback (most recent call last)
4 frames
/usr/local/lib/python3.8/dist-packages/mysql/connector/connection_cext.py in _open_connection(self)
    271                 self.converter.str_fallback = self._converter_str_fallback
    272         except MySQLInterfaceError as err:
--> 273             raise get_mysql_exception(
    274                 msg=err.msg, errno=err.errno, sqlstate=err.sqlstate
    275             ) from err
DatabaseError: 2003 (HY000): Can't connect to MySQL server on '196.xxx.xxx.xxx:3306' (113)

当我连接Django和mySQL时，下面的信息可以正常工作，但是python到MySQL的连接仍然有效