Python is connected to the mysql database example of of to add delete and change operations

I. relevant code
The database configuration class MysqlDBConn. Py

#encoding=utf-8
'''
Created on 2012-11-12

Mysql Conn The connection class 
'''

import MySQLdb

class DBConn:

    conn = None

    # Establish a connection to the database system 
    def connect(self):
        self.conn = MySQLdb.connect(host="localhost",port=3306,user="house", passwd="house" ,db="house",charset="utf8")

    # Get operation cursor 
    def cursor(self):
        try:
            return self.conn.cursor()
        except (AttributeError, MySQLdb.OperationalError):
            self.connect()
            return self.conn.cursor()

    def commit(self):
        return self.conn.commit()

    # Close the connection 
    def close(self):
        return self.conn.close()

MysqlDemo. Py class

#encoding=utf-8
'''
Created on 2012-11-12

@author: Steven

Mysql operation Demo
Done: Create table, delete table, data add, delete, change, batch insert 
'''
import MysqlDBConn

dbconn = MysqlDBConn.DBConn()

def process():
    # Establish a connection 
    dbconn.connect()
    # Delete table 
    dropTable()
    # Create a table 
    createTable()
    # Batch insert data 
    insertDatas()
    # A single insert 
    insertData()
    # Update the data 
    updateData()
    # Delete the data 
    deleteData()
    # Query data 
    queryData()
    # Release the connection 
    dbconn.close()

def insertDatas():
    sql = "insert into lifeba_users(name, realname, age) values(%s, %s, %s)"
    tmp = (('steven1', ' test 1',26), ('steven2', ' test 2',25))
    executemany(sql, tmp)

def updateData():
    sql = "update lifeba_users set realname = '%s' where name ='steven1'"%(" test 1 Modify the ")
    execute(sql)

def deleteData():
    sql = "delete from lifeba_users where id=2"
    execute(sql)

def queryData():
    sql = "select * from lifeba_users"
    rows = query(sql)
    printResult(rows)

def insertData():
    sql = "insert into lifeba_users(name, realname, age) values('%s', '%s', %s)"%("steven3"," test 3","26")
    print sql
    execute(sql)

def executemany(sql, tmp):
    ''' Insert multiple pieces of data '''
    conn=dbconn.cursor()
    conn.executemany(sql, tmp)

def execute(sql):
    ''' perform sql'''
    conn=dbconn.cursor()
    conn.execute(sql)

def query(sql):
    ''' The query sql'''
    conn=dbconn.cursor()
    conn.execute(sql)
    rows = conn.fetchmany(10)
    return rows

def createTable():
    ''' Create a table '''
    conn=dbconn.cursor()
    conn.execute('''
    CREATE TABLE `lifeba_users` (
      `ID` int(11) NOT NULL auto_increment,
      `name` varchar(50) default NULL,
      `realName` varchar(50) default NULL,
      `age` int(11) default NULL,
      PRIMARY KEY  (`ID`)
    ) ENGINE=MyISAM DEFAULT CHARSET=utf8;
    ''')
#    dbconn.commit()

def dropTable():
    ''' Delete table '''
    conn=dbconn.cursor()
    conn.execute('''
    DROP TABLE IF EXISTS `lifeba_users`
    ''')
#    dbconn.commit()

def printResult(rows):
    for row in rows:
        for i in range(0,len(row)):# Through the array 
            print row[i], # add ,  Print without breaking lines 
        print ''

if __name__ == '__main__':

    process()