Python 조작 mysql 첨삭 검사

#!C:/Python27  
#coding=utf-8

import MySQLdb

# MySQL    
mysql_host = '127.0.0.1'
mysql_user = 'root'
mysql_passwd = 'test'
mysql_port = '3306'
mysql_database = 'test'


def my_connect():
    """     """

    global conn, cursor
    
    #print MySQLdb.version_info
    
    try:
        conn = MySQLdb.connect(host=mysql_host, user=mysql_user, passwd=mysql_passwd,charset='utf8', autocommit=True, db=mysql_database)
        
        print u"
Message:  MySQL  "
    except Exception:
        print(u"
Message:    ")
        exit(20)
    cursor = conn.cursor()
    
def add():
    
    #add
    try:
        sql = "insert into user(name,age,insertTime) values(%s,%s,%s)"
        print sql
        param = ("tom",int(20),"2017-09-19 17:00:17")
        my_connect()#    
        cursor.execute(sql,param)
        cursor.close()
        conn.close()
    except StandardError as e:
        print "     》》》》》",e,"《《《《《     "
        #conn.rollback()
def update():
    #  
    my_connect()
    sql = "update user set name='%s' where id='%d'" %("ken",15)
    print  sql
    try:
        cursor.execute(sql)
        cursor.close()
        conn.close()
    except StandardError as e:
        print "      ",e
def Select():
    #  
    try:
        n = cursor.execute("SELECT t.id,t.name,t.age,t.* from user t  ORDER BY t.insertTime DESC LIMIT 10")
        data = cursor.fetchall()
        for row in data:
            #  int      str    
            print ('id: ',row[0], '  name: ',row[1],' age ',row[2])
        #    
        cursor.close()#    
        conn.close()#               
    except  Exception :
        #     ，      
        conn.rollback()
        print(u"
    ,     ")
def delete():
    #  
    my_connect()
    sql = "delete from user where name='%s'"%("tom1")
    #parama =("tom")
    cursor.execute(sql)
    cursor.close()
    conn.close()
my_connect()
Select()
add()
update()
delete()