复制代码 代码如下:
# -*- 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：
复制代码 代码如下:
#!/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='")
print b.GetSource()