Posted in Python onMarch 05, 2014
# -*- coding: utf-8 -*- import sys import MySQLdb reload(sys) sys.setdefaultencoding('utf-8') class DB(object): def __init__(self,host='127.0.0.1',port=3306,user='root',passwd='123',database=''): self.__host=host self.__port=port self.__user=user self.__passwd=passwd self.__database=database self.__open=False print '__init__' def __connect__(self): if self.__open == False: print 'connect db...' self.__conn = MySQLdb.connect(host=self.__host , port=self.__port , user=self.__user , passwd=self.__passwd,charset='utf8') self.__open = True def __executeSql__(self,sql): self.__connect__() self.__executor = self.__conn.cursor(cursorclass = MySQLdb.cursors.DictCursor) self.__executor.execute('use '+self.__database) #切换数据库 return self.__executor.execute(sql) def executeQueryForObject(self , sql): self.__executeSql__(sql) return self.__executor.fetchone() ''' 返回key=value 字典 ''' def executeQueryAll(self , sql): self.__executeSql__(sql) return self.__executor.fetchall() def executeUpdate(self ,sql='' , isAutoCommit=False): c = self.__executeSql__(sql) if isAutoCommit == True: self.commit() #提交事务 return c ''' #提交事务 ''' def commit(self): self.__conn.commit() #提交事务 ''' #关闭数据库,释放资源 ''' def closeDB(self): if not self.__conn is None: print 'close db...' self.__conn.commit() #提交事务 self.__conn.close() def print_parameters(self): print self.__user print self.__passwd print self.__host print self.__port ''' if __name__ == '__main__': db=DB(database='tb2013') #db.print_parameters() #db.executeSql('select * from tb_user') print db.executeQueryForObject('select count(*) as count from tb_user') _rows = db.executeQueryAll('select userid,nick from tb_user limit 10'); print _rows for row in _rows: print row print 'nick:%s' % str(row['nick']) print db.executeUpdate(sql='update tb_user set nick=\'test\' where userid=95084397',isAutoCommit=True) db.closeDB() '''
python连接mysql并提交mysql事务示例
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