python设置windows桌面壁纸

每天换一个壁纸，每天好心情。

# -*- coding: UTF-8 -*- 



from __future__ import unicode_literals

import Image

import datetime

import win32gui,win32con,win32api

import re

from HttpWrapper import SendRequest



StoreFolder = "c:\\dayImage"



def setWallpaperFromBMP(imagepath):

    k = win32api.RegOpenKeyEx(win32con.HKEY_CURRENT_USER,"Control Panel\\Desktop",0,win32con.KEY_SET_VALUE)

    win32api.RegSetValueEx(k, "WallpaperStyle", 0, win32con.REG_SZ, "2") #2拉伸适应桌面,0桌面居中

    win32api.RegSetValueEx(k, "TileWallpaper", 0, win32con.REG_SZ, "0")

    win32gui.SystemParametersInfo(win32con.SPI_SETDESKWALLPAPER,imagepath, 1+2)



def setWallPaper(imagePath):

    """

    Given a path to an image, convert it to bmp and set it as wallpaper

    """

    bmpImage = Image.open(imagePath)

    newPath = StoreFolder + '\\mywallpaper.bmp'

    bmpImage.save(newPath, "BMP")

    setWallpaperFromBMP(newPath)



def getPicture():

    url = "http://photography.nationalgeographic.com/photography/photo-of-the-day/"

    h = SendRequest(url)

    if h.GetSource():

        r = re.findall('<div class="download_link"><a href="(.*?)">Download',h.GetSource())

        if r:

            return SendRequest(r[0]).GetSource()

        else:

            print "解析图片地址出错，请检查正则表达式是否正确"

            return None





def setWallpaperOfToday():

    img = getPicture()

    if img:

        path = StoreFolder + "\\%s.jpg" % datetime.date.today()

        f = open(path,"wb")

        f.write(img)

        f.close()

        setWallPaper(path)



setWallpaperOfToday()

print 'Wallpaper set ok!'

其中的httpwrapper是我写的一个http访问的封装：

#!/usr/bin/env python 

# -*- coding: UTF-8 -*-

#-------------------------------------------------------------------------------

# Name: 对http访问的封装

#

# Author: qianlifeng

#

# Created: 10-02-2012

#-------------------------------------------------------------------------------



import base64

import urllib

import urllib2

import time

import re

import sys



class SendRequest:

  """

  网页请求增强类

  SendRequest('http://xxx.com',data=dict, type='POST', auth='base',user='xxx', password='xxx')

  """

  def __init__(self, url, data=None, method='GET', auth=None, user=None, password=None, cookie = None, **header):

    """

    url: 请求的url，不能为空

    date: 需要post的内容，必须是字典

    method: Get 或者 Post，默认为Get

    auth: 'base' 或者 'cookie'

    user: 用于base认证的用户名

    password: 用于base认证的密码

    cookie: 请求附带的cookie，一般用于登录后的认证

    其他头信息:

    e.g. referer='www.sina.com.cn'

    """



    self.url = url

    self.data = data

    self.method = method

    self.auth = auth

    self.user = user

    self.password = password

    self.cookie = cookie



    if 'referer' in header:

        self.referer = header[referer]

    else:

        self.referer = None



    if 'user-agent' in header:

        self.user_agent = header[user-agent]

    else:

## self.user_agent = 'Mozilla/5.0 (Windows NT 5.1; rv:8.0) Gecko/20100101 Firefox/8.0'

        self.user_agent = 'Mozilla/5.0 (iPhone; U; CPU iPhone OS 3_0 like Mac OS X; en-us) AppleWebKit/528.18 (KHTML, like Gecko) Version/4.0 Mobile/7A341 Safari/528.16'



    self.__SetupRequest()

    self.__SendRequest()



  def __SetupRequest(self):



    if self.url is None or self.url == '':

        raise 'url 不能为空!'



    #访问方式设置

    if self.method.lower() == 'post':

        self.Req = urllib2.Request(self.url, urllib.urlencode(self.data))



    elif self.method.lower() == 'get':

        if self.data == None:

            self.Req = urllib2.Request(self.url)

        else:

            self.Req = urllib2.Request(self.url + '?' + urllib.urlencode(self.data))



    #设置认证信息

    if self.auth == 'base':

        if self.user == None or self.password == None:

            raise 'The user or password was not given!'

        else:

            auth_info = base64.encodestring(self.user + ':' + self.password).replace('\n','')

            auth_info = 'Basic ' + auth_info

            self.Req.add_header("Authorization", auth_info)



    elif self.auth == 'cookie':

        if self.cookie == None:

            raise 'The cookie was not given!'

        else:

            self.Req.add_header("Cookie", self.cookie)





    if self.referer:

        self.Req.add_header('referer', self.referer)

    if self.user_agent:

        self.Req.add_header('user-agent', self.user_agent)





  def __SendRequest(self):



    try:

      self.Res = urllib2.urlopen(self.Req)

      self.source = self.Res.read()

      self.code = self.Res.getcode()

      self.head_dict = self.Res.info().dict

      self.Res.close()

    except:

      print "Error: HttpWrapper=>_SendRequest ", sys.exc_info()[1]





  def GetResponseCode(self):

    """

    得到服务器返回的状态码(200表示成功,404网页不存在)

    """

    return self.code



  def GetSource(self):

    """

    得到网页源代码，需要解码后在使用

    """

    if "source" in dir(self):

        return self.source

    return u''



  def GetHeaderInfo(self):

    """

    u'得到响应头信息'

    """

    return self.head_dict



  def GetCookie(self):

    """

    得到服务器返回的Cookie，一般用于登录后续操作

    """

    if 'set-cookie' in self.head_dict:

      return self.head_dict['set-cookie']

    else:

      return None



  def GetContentType(self):

    """

    得到返回类型

    """

    if 'content-type' in self.head_dict:

      return self.head_dict['content-type']

    else:

      return None



  def GetCharset(self):

    """

    尝试得到网页的编码

    如果得不到返回None

    """

    contentType = self.GetContentType()

    if contentType is not None:

        index = contentType.find("charset")

        if index > 0:

           return contentType[index+8:]

    return None



  def GetExpiresTime(self):

    """

    得到网页过期时间

    """

    if 'expires' in self.head_dict:

      return self.head_dict['expires']

    else:

      return None



  def GetServerName(self):

    """

    得到服务器名字

    """

    if 'server' in self.head_dict:

      return self.head_dict['server']

    else:

      return None



__all__ = [SendRequest,]



if __name__ == '__main__':

    b = SendRequest("http://www.baidu.com")

    print b.GetSource()

本文转载自：http://www.cnblogs.com/qianlifeng/archive/2012/05/10/2494005.html