python实现抓取必应图片设置桌面

源码参考https://github.com/vbirds/pyWallpaper，代码风格不错

本人只是将其适配到python3.5，并消除一些bug，源代码中桌面地址未使用绝对路径导致win10 下无法成功设置桌面

#python： 3.5
#os： win10 home

#-*-coding:utf-8-*-

from PIL import Image
import win32gui
import win32con
import win32api
import os
import threading
import urllib.request
import time
import sys
import json

'''
{
"images":[
{
"startdate":"20170827",
"fullstartdate":"201708271600",
"enddate":"20170828",
"url":"/az/hprichbg/rb/BotallackCornwall_ZH-CN11396172846_1920x1080.jpg",
"urlbase":"/az/hprichbg/rb/BotallackCornwall_ZH-CN11396172846",
"copyright":"康沃尔郡内的巴特莱克矿场， 英国 (© Robert Harding/Masterfile)",
"copyrightlink":"http://www.bing.com/search?q=botallack+manor&form=hpcapt&mkt=zh-cn",
"quiz":"/search?q=Bing+homepage+quiz&filters=WQOskey:%22HPQuiz_20170827_BotallackCornwall%22&FORM=HPQUIZ",
"wp":true,
"hsh":"5eb81f1029c57dfa1cc5f69ca871f4b1",
"drk":1,
"top":1,
"bot":1,
"hs":[]
}
],
"tooltips":{
"loading":"正在加载...",
"previous":"上一个图像",
"next":"下一个图像",
"walle":"此图片不能下载用作壁纸。",
"walls":"下载今日美图。仅限用作桌面壁纸。"
}
}
'''

class Wallpaper:

def __init__(self, time=60):
self.count = 0
if time <= 0 :
self.time = 60
self.time = time
self.urltemplate = 'http://cn.bing.com/HPImageArchive.aspx?format=js&idx=%d&n=1&nc=1361089515117&FORM=HYLH1'
self.baImageUrlList = []
self.localFileName  = ''
self.localBMPFileName  = ''
self.imagedir = './images/'
self.bmpdir = './bmpimage/'
self.bmplist = []

def start(self):
self.prepareDir()
self.parserImageUrl()
self.download_images()
self.image_convert_bmp()
self.set_wall_func()

def prepareDir(self):
if not os.path.exists(self.imagedir):
os.makedirs(self.imagedir)
if not os.path.exists(self.bmpdir):
os.makedirs(self.bmpdir)

def parserImageUrl(self):

for i in range(0, 7, 1):
url = self.urltemplate % i #use i replace format
try:
content = urllib.request.urlopen(url,None).read().decode("utf-8")# 由于有中文，decode("utf-8")必须
except:
print(url)
print("parse try again")
decodedjson = json.loads(content)
imageurl = decodedjson['images'][0]['url']

self.baImageUrlList.append('https://cn.bing.com'+imageurl)

def download_images(self):

for url in self.baImageUrlList:
imagename = os.path.basename(url)
imagepath = self.imagedir + imagename
print(imagepath)
f = open(imagepath, 'wb')
try:
conn = urllib.request.urlopen(url)
except:
print(url)
print("download try again")
f.write(conn.read())
f.close()

def image_convert_bmp(self):
imaglist = os.listdir(self.imagedir)
for imagepath in imaglist:
file_name = os.path.basename(imagepath)
file_name_type = os.path.splitext(file_name)
file_name = file_name_type[0]
newpath = self.bmpdir + file_name + '.bmp'
imagepath  = './images/' + imagepath

bmpImage = Image.open(imagepath)
bmpImage.save(newpath, "BMP")
self.bmplist.append(sys.path[0]+'\\bmpimage\\'+file_name + '.bmp')

def setWallpaper(self, 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")
print(imagepath)
win32gui.SystemParametersInfo(win32con.SPI_SETDESKWALLPAPER,imagepath, 1+2)#文件需要使用完整路径

def set_wall_func(self):
list_size = len(self.bmplist)
index = self.count % list_size
filename = self.bmplist[index]
self.count += 1
self.setWallpaper(filename)
self.set_wall_timer()

def set_wall_timer(self):
timer = threading.Timer(self.time, self.set_wall_func)
timer.start()

if __name__ == '__main__':

bing = Wallpaper(300)
bing.start()