window10系统下使用python3.3版本实现mysql查询

#!/usr/bin/env python
import MySQLdb
import time

class ZDB:
    
    error_code = ‘‘
    _instance = None
    _conn = None
    _cur = None

    _TIMEOUT = 30
    _timecount = 0

    def __init__(self,dbconfig):
        try:
            self._conn = MySQLdb.connect(host=dbconfig[‘host‘],
                                         port=dbconfig[‘port‘],
                                         user=dbconfig[‘user‘],
                                         passwd=dbconfig[‘passwd‘],
                                         db=dbconfig[‘db‘],
                                         charset=dbconfig[‘charset‘])
        except MySQLdb.Error,e:
            self.error_code = e.args[0]
            error_msg = "MYSQL ERROR ! ",e.args[0].e.args[1]
            print error_msg

            if self._timecount < self._TIMEOUT:
                interval = 5
                self._timecount += interval
                time.sleep(interval)
                return self.__init__(dbconfig)
            else:
                raise Exception(error_msg)

        self._cur = self._conn.cursor()
        self._instance = MySQLdb


    def query(self,sql):
        try:
            self._cur.execute("SET NAMES UTF8")
            result = self._cur.execute(sql)
        except MySQLdb.error,e:
            self.error_code = e.args[0]
            print "MYSQL ERROR-Query:",e.args[0],e.args[1]
            result=FALSE
        return result

    def update(self,sql):
        try:
            self._cur.execute("SET NAMES UTF8")
            result = self._cur.execute(sql)
            self._conn.commit()
        except MySQLdb.Error,e:
            self.error_code = e.args[0]
            print "MYSQL ERROR-Update:",e.args[0],e.args[1]
            result=FALSE
        return result
    def insert(self,sql):
        try:
            self._cur.execute("SET NAMES UTF8")
            self._cur.execute(sql)
            self._conn.commit()
            return self._conn.insert_id()
        except MySQLdb.Error,e:
            self.error_code = e.args[0]
            print "MYSQL ERROR-Insert:",e.args[0],e.args[1]
            result=FALSE
    def fetchAllRows(self):
        return self._cur.fetchall()
    def getRowCount(self):
        return self._cur.rowcount()
    def commit(self):
        self._conn.commit()
    def rollback(self):
        self._conn.rollback()
    def __del__(self):
        try:
            self._cur.close()
            self._conn.close()
        except:
            pass
    def close(self):
        self.__del__()

#!/usr/bin/env python
from DB import ZDB
def main():
    dbconfig={‘host‘:‘ ‘,
              ‘port‘:3306,
              ‘user‘:‘ ‘,
              ‘passwd‘:‘ ‘,
              ‘db‘:‘test‘,
              ‘charset‘:‘UTF8‘}
    db=ZDB(dbconfig)

    sql = "SELECT * FROM `user`"
    db.query(sql)
    result = db.fetchAllRows()
    print "This is the result>",result
    for row in result:
        for colum in row:
            print colum
    db.close()
main()

#!/usr/bin/env python
# -*- coding: utf-8 -*-
import pymysql
conn=pymysql.connect(host=‘localhost‘,
                     port=3306,
                     user=‘root‘,
                     passwd=‘root‘,
                     db=‘test‘,
                     charset=‘utf8‘)
cur = conn.cursor()
sql = "SELECT * FROM chart_pie"
cur.execute(sql)
for r in cur.fetchall():
    for column in r:
        print(r)

conn.close()