python如何在数据库中传输数据

# -*- coding: utf-8 -*-
 
import MySQLdb
import time
import warnings
 
warnings.filterwarnings("ignore")
 
 
class ConnectMysql(object):
    def __init__(self):
#         这里设置分页查询, 每页查询多少数据
        self.page_size = 5000
 
    def getTable(self):
        conn = MySQLdb.connect(
            host="***.***.**.**",
            user="****",
            passwd="*************",
            db='****',
            charset='utf8'
        )
        conn_local = MySQLdb.connect(
            host="********************************",
            user="**********",
            passwd="********",
            db='*******',
            charset='utf8'
        )
        cur = conn.cursor()
        cur_local = conn_local.cursor()
        cur.execute('show tables')
        tables = cur.fetchall()
        for table in tables:
            print str(table[0]).lower()
            # 需要迁移的数据库查询表的列数
            cur.execute("SELECT COUNT(*) FROM information_schema.COLUMNS WHERE table_schema='china' AND table_name='" + table[0] + "'")
            table_col_count = cur.fetchone()
            # print table_col_count[0]
            # 需要迁移的数据库查询表的结构
            cur.execute('show create table ' + table[0])
            result = cur.fetchall()
            create_sql = result[0][1]
            # 查询需要迁移的数据库表的数据条数
            cur.execute('select count(*) from ' + table[0])
            total = cur.fetchone()
            page = total[0] / self.page_size
            page1 = total[0] % self.page_size
            if page1 != 0:
                page = page + 1
 
            # 阿里云数据库创建表
            cur_local.execute("SELECT table_name FROM information_schema.`TABLES` WHERE table_schema='user' AND table_name='" + str(table[0]).lower() + "'")
            table_name = cur_local.fetchone()
            if table_name is None:
                cur_local.execute(create_sql)
            for p in range(0, page):
                while True:
                    try:
                        print '开始', table[0], '的第', p + 1, '页查询'
                        if p == 0:
                            limit_param = ' limit ' + str(p * self.page_size) + ',' + str(self.page_size)
                        else:
                            limit_param = ' limit ' + str(p * self.page_size + 1) + ',' + str(self.page_size)
                        cur.execute('select * from ' + table[0] + limit_param)
                        inserts = cur.fetchall()
                        print '查询成功'
                        param = ''
                        for i in range(0, table_col_count[0]):
                            param = param + '%s,'
                        print '开始插入'
                        cur_local.executemany('replace into ' + table[0] + ' values (' + param[0:-1] + ')', inserts)
                        print table[0], '的第', p + 1, '页, 插入完成, 还有', page - p - 1, '页, 任重而道远'
                        conn_local.commit()
                        break
                    except Exception as e:
                        print e
                        time.sleep(60)
                        cur = conn.cursor()
                        cur_local = conn_local.cursor()
                print table[0], ' 插入完成'
                print '\n \n ======================================================================== \n\n'
        cur_local.close()
        conn_local.close()
        cur.close()
        conn.close()
 
 
if __name__ == '__main__':
    conn_mysql = ConnectMysql()
    conn_mysql.getTable()