每月至少凑一篇博.保持活力

这个月真个没啥好写的,帖点代码凑数.
pyhon 下载BING.CN首页背景图片,并设置为桌面.(我放在"启动"里,每天开机换一个背景)

#!/usr/bin/env python
#coding=utf-8
#author:haozes
#下载BING.CN首页上的背景图片,并设置为桌面背景图片
import urllib.request
import re
import os.path

from win32com.shell import shell
import pythoncom
import sys
import time


def getFileName(url):  
    if url==None: return None  
    if url=="" : return ""  
    arr=url.split("/")  
    return arr[len(arr)-1]  

def setDskImgFromBing():
    url="http://cn.bing.com"
    savePath=r"c:\bing\img"
    response=urllib.request.urlopen(url)
    html=response.read().decode('utf-8')
    reobj = re.compile(r"g_img=\{url:'(.+?)',id:'bgDiv'", re.DOTALL | re.IGNORECASE)
    match = reobj.search(html)
    if match:
        result = match.group(1)
    else:
        result = ""
    bgPicUrl=url+result.replace('\\','');    
    print(bgPicUrl)
    fileName=getFileName(bgPicUrl);
    print("down pic:"+fileName)
    dstPath=savePath+"\\"+fileName
    if os.path.exists(dstPath):
        print("img file exist!")
        return
    if os.path.exists(savePath)==False:
        os.mkdir(savePath)
    urllib.request.urlretrieve(bgPicUrl,dstPath) 
    time.sleep(1)
    if setWallPaper(dstPath):
        print("set desktop ok!")
    else:
        print("set desktop failed!")    
    pass

def setWallPaper(wallpaper,style=2):
    try:  
       iad=pythoncom.CoCreateInstance(shell.CLSID_ActiveDesktop, None, pythoncom.CLSCTX_INPROC_SERVER, shell.IID_IActiveDesktop)  
       opts=iad.GetDesktopItemOptions()  
       Reserved=0 
       iad.SetWallpaper(wallpaper, Reserved)  
       iad.SetWallpaperOptions(style,Reserved)  
       iad.ApplyChanges(0xffff)  
    except:
        print("Unexpected error:", sys.exc_info()[0])
        return False 
    else:  
       return True 
   
    
if __name__ == "__main__":
    setDskImgFromBing()