python抓取bing主页背景图片

最初Python2写法：

#!/usr/bin/env python

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

# -*- author:nancy -*-

# python2抓取bing主页所有背景图片

import urllib,re,sys,os

def get_bing_backphoto():

if (os.path.exists('photos')== False):

os.mkdir('photos')

for i in range(0,1000):

url = 'http://cn.bing.com/HPImageArchive.aspx?format=js&idx='+str(i)

+'&n=1&nc=1361089515117&FORM=HYLH1'

html = urllib.urlopen(url).read()

if html == 'null':

print 'open & read bing error!'

sys.exit(-1)

reg = re.compile('"url":"(.*?)","urlbase"',re.S)

text = re.findall(reg,html)

#http://s.cn.bing.net/az/hprichbg/rb/LongJi_ZH-CN8658435963_1366x768.jpg

for imgurl in text:

right = imgurl.rindex('/')

name = imgurl.replace(imgurl[:right+1],'')

savepath = 'photos/'+ name

urllib.urlretrieve(imgurl, savepath)

print name + ' save success!'

get_bing_backphoto()

Python3与Python2的错误调整：

TypeError: can't use a string pattern on a bytes-like object

 原因为Python3 findall数据类型用bytes类型，因此在正则表达式前应添加html = html.decode('utf-8')。

“AttributeError: 'module' object has no attribute 'urlopen'”

 原因是Python3里的urllib模块已经发生改变，此处的urllib都应该改成urllib.request。

由于bing图片对外接口的图片json格式变了，python第三方库的导入格式有变化，因此代码调整如下：

#!/usr/bin/env python

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

# -*- author:nancy-*-

# python3抓取bing主页所有背景图片

import urllib.request,re,sys,os

def get_bing_backphoto():

if (os.path.exists('photos')== False):

os.mkdir('photos')

for i in range(0,10):

url = 'http://cn.bing.com/HPImageArchive.aspx?format=js&idx='+str(i)+'&n=1&nc=1361089515117&FORM=HYLH1'

html = urllib.request.urlopen(url).read()

if html == 'null':

print( 'open & read bing error!')

sys.exit(-1)

html = html.decode('utf-8')

html = html.replace('/az/','http://s.cn.bing.net/az/')

reg = re.compile('"url":"(.*?)","urlbase"',re.S)

text = re.findall(reg,html)

for imgurl in text :

right = imgurl.rindex('/')

print(imgurl)

name = imgurl.replace(imgurl[:right+1],'')

savepath = 'photos/'+ name

urllib.request.urlretrieve(imgurl, savepath)

print (name + ' save success!')

get_bing_backphoto()