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()