cursor = cnxn.cursor()

cursor.execute("select user_id, user_name from users") #調用游標指針的execute方法執(zhí)行sql語句
row = cursor.fetchone() #sql語句執(zhí)行結果的獲取，如果需要一次獲取多條記錄，可以使用cursor.fetchall()方法
if row:
  print row

cnxn.commit() 

cnxn.close() 

#!/usr/bin/python
#coding=utf-8
#-------------------------------------------------------------------------------
# Name: datamapper.py
# Purpose: using pyodbc library to operate database
#
# Author: huamin.zhang
#
# Created: 20/04/2013
#-------------------------------------------------------------------------------
import pyodbc
import time
class ODBC_MS:
  ''''' 對pyodbc庫的操作進行簡單封裝
  pyodbc庫的下載地址:http://code.google.com/p/pyodbc/downloads/list
  使用該庫時，需要在Sql Server Configuration Manager里面將TCP/IP協(xié)議開啟
  此類完成對數(shù)據(jù)庫DB的連接/查詢/執(zhí)行操作
  正確的連接方式如下:
  cnxn = pyodbc.connect('DRIVER={SQL SERVER};SERVER=ZHANGHUAMIN\MSSQLSERVER_ZHM;DATABASE=AdventureWorks2008;UID=sa;PWD=wa1234')
  cnxn = pyodbc.connect(DRIVER='{SQL SERVER}',SERVER=r'ZHANGHUAMIN\MSSQLSERVER_ZHM',DATABASE='AdventureWorks2008',UID='sa',PWD='wa1234',charset="utf-8")
  '''
  def __init__(self, DRIVER,SERVER, DATABASE, UID, PWD):
    ''''' initialization '''
    self.DRIVER = DRIVER
    self.SERVER = SERVER
    self.DATABASE = DATABASE
    self.UID = UID
    self.PWD = PWD
  def __GetConnect(self):
    ''''' Connect to the DB '''
    if not self.DATABASE:
      raise(NameError,"no setting db info")
    self.conn = pyodbc.connect(DRIVER=self.DRIVER, SERVER=self.SERVER, DATABASE=self.DATABASE, UID=self.UID, PWD=self.PWD, charset="UTF-8")
    #self.conn = pyodbc.connect(DRIVER=self.DRIVER, SERVER=self.SERVER, DATABASE=self.DATABASE, UID=self.UID, PWD=self.PWD)
    cur = self.conn.cursor()
    if not cur:
      raise(NameError,"connected failed!")
    else:
      return cur
  def ExecQuery(self, sql):
    ''''' Perform one Sql statement '''
    cur = self.__GetConnect() #建立鏈接并創(chuàng)建數(shù)據(jù)庫操作指針
    cur.execute(sql)#通過指針來執(zhí)行sql指令
    ret = cur.fetchall()#通過指針來獲取sql指令響應數(shù)據(jù)
    cur.close()#游標指標關閉
    self.conn.close()#關閉數(shù)據(jù)庫連接
    return ret
  def ExecNoQuery(self,sql):
    ''''' Person one Sql statement like write data, or create table, database and so on'''
    cur = self.__GetConnect()
    cur.execute(sql)
    self.conn.commit()#連接句柄來提交
    cur.close()
    self.conn.close()
def main():
  ms = ODBC_MS('{SQL SERVER}', r'ZHANGHUAMIN\MSSQLSERVER_ZHM', 'zhm_db', 'sa', 'wa1234')#zhm_db數(shù)據(jù)庫是在sql server 終端里先創(chuàng)建好的
  #ms.ExecNoQuery("drop table Customers_test")
  sql = '''''CREATE TABLE Customers_test
  (
    CustomerNo   int       IDENTITY   NOT NULL,
    CustomerName  varchar(30)         NOT NULL,
    Address1    nvarchar(30)         NOT NULL ,
    Address2    nvarchar(30)         NOT NULL,
    City      nvarchar(20)         NOT NULL,
    State     nchar(20)          NOT NULL,
    Zip      varchar(10)         NOT NULL,
    Contact    varchar(25)         NOT NULL,
    Phone     char(15)           NOT NULL,
    FedIDNo    varchar(9)          NOT NULL,
    DateInSystem  smalldatetime        NOT NULL
  );'''
  ms.ExecNoQuery(sql)
  #注意:在進行插入操作時,自增長度不能夠寫入
  sql = u'''''insert into Customers_test
  (
    CustomerName,
    Address1,
    Address2,
    City,
    State,
    Zip,
    Contact,
    Phone,
    FedIDNo,
    DateInSystem
  )
  VALUES
  (
    'zhm', '北京市朝陽區(qū)', '北京市朝陽區(qū)', '北京', '哈哈','3625514', '18001226509', '010-88765879', '21', '2012-09-09'
  );
  '''
  ms.ExecNoQuery(sql)
if __name__ == '__main__':
  main()