得到格属性VAL和DIV正文 [英] get div attribute val and div text body

问题描述

下面是小code得到DIV ATTR值。所有div名称相同与相同ATTR名。

Here is small code to get div attr value. All div name are same with same attr name.

redditFile = urllib2.urlopen("http://www.bing.com/videos?q=owl")
redditHtml = redditFile.read()
redditFile.close()
soup = BeautifulSoup(redditHtml)

productDivs = soup.findAll('div', attrs={'class' : 'dg_u'})
for div in productDivs:
    print div.find('div', {"class":"vthumb"})['smturl']
    #print div.find("div", {"class":"tl text-body"}) This print none rather then div text

第一次印刷给出了一些网址（有时4,6,8等），然后

first print gives some urls(some times 4,6,8 etc) and then

KeyError                                  Traceback (most recent call last)
<ipython-input-34-cc950a8a84f7> in <module>()
     26 productDivs = soup.findAll('div', attrs={'class' : 'dg_u'})
     27 for div in productDivs:
---> 28     print div.find('div', {"class":"vthumb"})['smturl']
     29     print div.find("div", {"class":"tl text-body"})

/usr/local/lib/python2.7/dist-packages/bs4/element.pyc in __getitem__(self, key)
    903         """tag[key] returns the value of the 'key' attribute for the tag,
    904         and throws an exception if it's not there."""
--> 905         return self.attrs[key]
    906 
    907     def __iter__(self):

KeyError: 'smturl'

所有div名称都一样有相同的 smturl ATTR的名字，为什么它给 KeyError异常任何帮助吗？

as all div name are same with same smturl attr name, why it gives KeyError any help?

推荐答案

并非所有的div有 smturl 属性，因此您需要将属性添加到找到电话。也没有在 productDivs 所有元素包含你正在寻找的div，所以我添加了测试，如果找到返回无。

Not all divs have smturl attribute, so you need to add the attribute to find call. Also not all elements in productDivs contain divs you are looking for, hence I've added test if find returns None.

In [27]: for div in productDivs:
  ....:     if div.find('div', {"class":"vthumb", 'smturl': True}) is not None:
  ....:         print div.find('div', {"class":"vthumb", 'smturl': True})['smturl']
  ....:
http://ts2.mm.bing.net/th?id=OMB.9hfZ6cCDfUWbpw&pid=2.1
http://ts4.mm.bing.net/th?id=OMB1.n%2b12M8SoyFcsag&pid=2.1
http://ts4.mm.bing.net/th?id=OMB.ev1wnIiszGjhUg&pid=2.1
http://ts4.mm.bing.net/th?id=OMB.hDLa5PO07Chclw&pid=2.1
http://ts2.mm.bing.net/th?id=OMB.xDT9H25QFJ2jBw&pid=2.1
http://ts3.mm.bing.net/th?id=OMB.BULQolkxkaZ0uw&pid=2.1
http://ts3.mm.bing.net/th?id=OMB.xp3c0DyKrfmB7Q&pid=2.1
http://ts4.mm.bing.net/th?id=OMB.MxP9fUyaJCRyhw&pid=2.1
http://ts4.mm.bing.net/th?id=OMB2.CWjPPKiJQc4z6w&pid=2.1
http://ts1.mm.bing.net/th?id=OMB1.ZVKhvML3%2bPzM1w&pid=2.1
http://ts1.mm.bing.net/th?id=OMB.SLn%2b0NwKeUdZXw&pid=2.1
http://ts2.mm.bing.net/th?id=OMB.4HJqrT9pBevGlg&pid=2.1
http://ts2.mm.bing.net/th?id=OMB2.HgWYR9sjPw6JlQ&pid=2.1
http://ts1.mm.bing.net/th?id=OMB.RyBXWQ9sH9wThw&pid=2.1
http://ts2.mm.bing.net/th?id=OMB2.Vf21EgXRXMcdfg&pid=2.1
http://ts3.mm.bing.net/th?id=OMB2.BIb6qwbHniC1vw&pid=2.1
http://ts3.mm.bing.net/th?id=OMB1.H9bwRYncKU380A&pid=2.1
http://ts2.mm.bing.net/th?id=OM1.mBXeu55OD4VimQ&pid=2.1

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