python mysql基本操作

#链接mysql#插入数据import  MySQLdb

conn = MySQLdb.connect(host = ‘127.0.0.1‘,user = ‘root‘,passwd = ‘‘,db = ‘mytest‘)cur = conn.cursor()reConn =  cur.execute("insert into  userinfo(id,name) value(3,‘tony‘)")conn.commit()cur.close()conn.close()

print reConn

#查询数据import  MySQLdb

conn = MySQLdb.connect(host = ‘127.0.0.1‘,user = ‘root‘,passwd = ‘‘,db = ‘mytest‘)cur = conn.cursor(cursorclass=MySQLdb.cursors.DictCursor)   #以字典形式获取数据cur = conn.cursor()                                         #以元组形式获取数据#reConn =  cur.execute("select * from userinfo")sql = "select name from userinfo where id = %s"#sql = "select id from userinfo where id = %s"params = 1#params = ‘dendi‘#reConn = cur.execute(sql,params)reConn = cur.execute("select * from userinfo")#fetchall把查找到的数据一下拿出来#fetchone逐个取数据# data = cur.fetchall()data = cur.fetchone()print datadata = cur.fetchone()print datacur.close()conn.close()# print dataprint reConn

#更新数据import  MySQLdb

conn = MySQLdb.connect(host = ‘127.0.0.1‘,user = ‘root‘,passwd = ‘‘,db = ‘mytest‘)cur = conn.cursor()sql = "update userinfo set name = ‘aaa‘ where id = ‘%s‘"params = 1reConn =  cur.execute(sql,params)conn.commit()#conn.rollback()cur.close()conn.close()

print reConn

#删除数据import  MySQLdb

conn = MySQLdb.connect(host = ‘127.0.0.1‘,user = ‘root‘,passwd = ‘‘,db = ‘mytest‘)cur = conn.cursor()sql = "delete from userinfo  where id = ‘%s‘"params = 1reConn =  cur.execute(sql,params)conn.commit()#conn.rollback()cur.close()conn.close()

print reConn

参考博客：http://www.cnblogs.com/wupeiqi/articles/4198124.html