python mysql desc

#!/usr/bin/python
import MySQLdb

try:
        conn=MySQLdb.connect(host='localhost',user='root',passwd='yourpasswd',db='yourdb')
        cur=conn.cursor()
        cur.execute('desc bus_gps')
        rows=cur.fetchall()
        desc = cur.description
        name_type_dict={}
        for row in rows:
                name_type_dict[str(row[0])]=row[1]
                print row[0],row[1]
        cur.close()
        conn.close()
        print name_type_dict
except MySQLdb.Error,e:
        print 'Mysql Error %d: %s' % (e.args[0],e.args[1])