python mysql CRUD

#coding:utf-8
import MySQLdb
import json
#连接
conn= MySQLdb.connect(
        host='localhost',
        port = 3306,
        user='root',
        passwd='',
        db ='test'
        )
cur=conn.cursor()

#单条插入
cur.execute("insert into user (name ,age,sex) value ('%s',%s,%s)"%('a',1,1))

#批量
cur.executemany("insert into user (name ,age,sex) values (%s,%s,%s)",[("e", 1, 1), ("f", 1, 1), ("g", 1, 1)])

#查询单条
cur.execute("select * from user where id = %s and name = '%s'" % (1,'张三'))
res_data=json.dumps(cur.fetchone(),ensure_ascii=False,encoding="utf8")
print res_data

#查询多条
cur.execute("select * from user")
res_data=json.dumps(cur.fetchmany(15),ensure_ascii=False,encoding="utf8")

print res_data

#修改

cur.execute("update user set name='%s' where id= %s"%('王麻子',1))

#删除

cur.execute("delete from user where id=2")

conn.commit()

cur.close()

conn.close()