python连接mysql循环插入千万条数据脚本

#encoding:utf-8
import pymysql
import time
import random
#连接mysql
db = pymysql.connect(‘14.29.249.74‘,‘kx_admin‘,‘Yjh7yC0L7L1G1k6qXKwb‘,‘ilock‘)
#获取mysql操作光标
cursor = db.cursor()
#初始化变量
count = 0
#设置sql语句循环次数
while count <= 100:
    count += 1
    #定义mysql字段的范围随机数变量
    num = random.randint(0,2)
    memo_num = random.randint(100,111)
    city_list = [‘长沙‘,‘湘潭‘,‘株洲‘,‘衡阳‘]
    a = random.choice(city_list)
    #生成mysql语句插入语句
    sql = "insert  into iodn_city(city_code,city_name,memo)values(%s,‘%s‘,%s)" %(num,a,memo_num)
    #执行sql语句
    try:
        cursor.execute(sql)
        db.commit()
    #错误回滚    
    except:
        db.rollback()
#关闭mysql
db.close()