BeautifulSoup / lxml：大元素有问题吗？

Question

import os, re, sys, urllib2
from bs4 import BeautifulSoup
import lxml

html = urllib2.urlopen("http://www.hoerzu.de/tv-programm/jetzt/")
soup = BeautifulSoup(html, "lxml")
divs = soup.find_all("div", {"class":"block"})
print len(divs)

Output:

ActivePython 2.7.2.5 (ActiveState Software Inc.) based on
Python 2.7.2 (default, Jun 24 2011, 12:21:10) [MSC v.1500 32 bit (Intel)] on win
32
Type "help", "copyright", "credits" or "license" for more information.
>>> import os, re, sys, urllib2
>>> from bs4 import BeautifulSoup
>>> import lxml
>>>
>>> html = urllib2.urlopen("http://www.hoerzu.de/tv-programm/jetzt/")
>>> soup = BeautifulSoup(html, "lxml")
>>> divs = soup.find_all("div", {"class":"block"})
>>> print len(divs)
2

I also tried:

divs = soup.find_all(class_="block")

with same result ...

But there are 11 elements that fit this condition. So are there any limitations such as max element size resp. how can I get all the elements?

Answer 1

The easiest way is probably using the 'html.parser' instead of 'lxml':

import os, re, sys, urllib2
from bs4 import BeautifulSoup
import lxml

html = urllib2.urlopen("http://www.hoerzu.de/tv-programm/jetzt/")
soup = BeautifulSoup(html, "html.parser")
divs = soup.find_all("div", {"class":"block"})
print len(divs)

With your original code (using lxml ) it printed 1 for me, but this prints 11 . lxml is lenient but not as lenient as html.parser for this page.

Please note that the page has over one thousand warnings if you run it through tidy . Including invalid character codes, unclosed <div> s, letters like < and / at positions they are not allowed.