本文實例講述了Python實現一個簡單的MySQL類。分享給大家供大家參考。
具體實現方法如下：
復制代碼
代碼如下:
#!/usr/bin/env python
# -*- coding:utf-8 -*-
# Created on 2011-2-19
# @author: xiaoxiao
import MySQLdb
import sys
__all__ = ['MySQL']
class MySQL(object):
??? '''
??? MySQL
??? '''
??? conn = ''
??? cursor = ''
??? def __init__(self,host='localhost',user='root',passwd='root',db='mysql',charset='utf8'):
??????
??????? """MySQL Database initialization """
??????? try:
??????????? self.conn = MySQLdb.connect(host,user,passwd,db)
??????? except MySQLdb.Error,e:
??????????? errormsg = 'Cannot connect to server\nERROR (%s): %s' %(e.args[0],e.args[1])
??????????? print errormsg
??????????? sys.exit()
??????????
??????? self.cursor = self.conn.cursor()
??????
??? def query(self,sql):
??????? """? Execute SQL statement """
??????? return self.cursor.execute(sql)
??
??? def show(self):
??????? """ Return the results after executing SQL statement """
??????? return self.cursor.fetchall()
?????????????
??? def __del__(self):
??????? """ Terminate the connection """
??????? self.conn.close()
??????? self.cursor.close()
??????
#test
if __name__ == '__main__':
??
??? mysql = MySQL(host=localhost,passwd='test',db='mysql')
??? mysql.query('select * from users')
??? result = mysql.show()
??? print len(result)
??? print result[1]
# -*- coding:utf-8 -*-
# Created on 2011-2-19
# @author: xiaoxiao
import MySQLdb
import sys
__all__ = ['MySQL']
class MySQL(object):
??? '''
??? MySQL
??? '''
??? conn = ''
??? cursor = ''
??? def __init__(self,host='localhost',user='root',passwd='root',db='mysql',charset='utf8'):
??????
??????? """MySQL Database initialization """
??????? try:
??????????? self.conn = MySQLdb.connect(host,user,passwd,db)
??????? except MySQLdb.Error,e:
??????????? errormsg = 'Cannot connect to server\nERROR (%s): %s' %(e.args[0],e.args[1])
??????????? print errormsg
??????????? sys.exit()
??????????
??????? self.cursor = self.conn.cursor()
??????
??? def query(self,sql):
??????? """? Execute SQL statement """
??????? return self.cursor.execute(sql)
??
??? def show(self):
??????? """ Return the results after executing SQL statement """
??????? return self.cursor.fetchall()
?????????????
??? def __del__(self):
??????? """ Terminate the connection """
??????? self.conn.close()
??????? self.cursor.close()
??????
#test
if __name__ == '__main__':
??
??? mysql = MySQL(host=localhost,passwd='test',db='mysql')
??? mysql.query('select * from users')
??? result = mysql.show()
??? print len(result)
??? print result[1]
希望本文所述對大家的Python程序設計有所幫助。
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