Python MySQL - 進行數據查詢

#coding=utf-8
import mysql.connector
import importlib
import sys
# reload(sys)
# sys.setdefaultencoding('utf-8')

#連接數據庫的信息
class ConnectionMysql(object):
    __config = {
        'host':'115.xx.10.121',
        'port':'3306',
        'user':'root',
        'password':'xxxxx8Z6XPXbvos',
        'database':'xxxx_site',
        'charset':'utf8',
    }
    def __init__(self):
        try:
            self.conn = mysql.connector.connect(**ConnectionMysql.__config)  
        except mysql.connector.Error as e:
            self.conn = None 
        self.cursor = None
    
    def connectdatabase(self):
        pass
    
    #查詢數據
    def selectdatabase(self,sql):
            self.cursor = self.conn.cursor(buffered=True)
            #執行sql語句
            self.cursor.execute(sql)
            # fetchall() 獲取所有記錄
            dataslist = self.cursor.fetchall()
            dataslists = []
            for datas in dataslist:
                for data in datas:
                    if data==None:
                        dataslists.append(data)             
                    else:
                        #dataslists.append(data.decode('utf-8'))
                        dataslists.append(data)
            return dataslists

    def closedatabase(self):
        try:
            print '關閉數據庫中。。'
            self.cursor.close()#關閉標記位
            self.conn.close()#關閉數據庫鏈接
            print '數據庫已關閉'
        except mysql.connector.Error as e:
            raise Exception('關閉數據庫失敗,%s'%(str(e)))

if __name__ == '__main__':
    conn = ConnectionMysql()
    conn.connectdatabase()
    dataslist = conn.selectdatabase('select title from site_basic_info') 
    #repr(dataslist).decode('unicode-escape')  解決中文編碼問題
    print(repr(dataslist).decode('unicode-escape'))