python连接mysql

import pymysql
import random
conn = pymysql.connect(host ='127.0.0.1',user ='lick',passwd='123456',db='pythontest')#建立连接
print(conn)

for i in range(1,10000):
    idm = random.randint(1000,10000)
    name = "test"+str(idm)
    cur = conn.cursor()#建立游标，以游标为基本执行sql语句
    cur.execute("show tables")#执行sql语句
    sql = "insert into tb01 values(%d,'%s');"%(idm,name)
    cur.execute(sql)
    cur.execute("select * from tb01")
    conn.commit()#提交sql语句到database
ret = cur.fetchall()#获取语句执行的信息
print(ret)
for x in ret:
    print(x)

cur.close()
conn.close()