python ssh mysql

#!/usr/bin/python
# -*- coding: UTF-8 -*-


import pymysql
from sshtunnel import SSHTunnelForwarder

with SSHTunnelForwarder(
        ('47.46.42.49', 22),                    # 跳板机ip及端口
        ssh_password='*******',                 # 跳板机密码
        ssh_username='root',                    # 跳板机用户名
        remote_bind_address=('rm.....mysql.rds.aliyuncs.com', 3306)) as server:  # 连接的数据库地址及端口

    db_connect = pymysql.connect(host='127.0.0.1',                 # 此处必须是是127.0.0.1
                                 port=server.local_bind_port,      # 默认，无需修改
                                 user='test',                      # 连接的数据库用户名
                                 passwd='******',                  # 连接的数据库密码
                                 db='test_db')                     # 连接的数据库名称

    cur = db_connect.cursor()
    cur.execute('select * from user_infos')
    data = cur.fetchone()
    print(data[0])