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我使用下面的代码从这个tutorial。Python的再美丽的汤有意想不到的字符串
import urllib2
from urllib import urlopen
from BeautifulSoup import BeautifulSoup
import re
webpage = urlopen('http://feeds.huffingtonpost.com/huffingtonpost/LatestNews').read
# open webpage and read it web page is variable
patFinderTitle = re.compile('<title>(.*)</title>')
# get characters between titles
patFinderLink = re.compile('<link rel.*href="(.*)" />')
findPatTitle = re.findall(patFinderTitle, webpage)
# variable is declared, uses re module to find all find two variables using the following args
findPatLink = re.findall(patFinderLink, webpage)
listIterator - []
listIterator[:] = range(2,16)
soup2 = BeautifulSoup(webpage)
print soup2.findAll('title')
但是,我得到这个错误。
Traceback (most recent call last):
File "tutorial_re.py", line 14, in <module>
findPatTitle = re.findall(patFinderTitle, webpag
File "C:\Python27\lib\re.py", line 177, in findall
return _compile(pattern, flags).findall(string)
TypeError: expected string or buffer
我使用python 2.75。我根本不明白这个错误。为什么我有这个错误?我如何解决它?感谢您的帮助提前。有些论坛认为我应该给出第三个论点,但是代码似乎对我来说是逐字的,因为它是在9:45左右的视频中。
不应该被它'的urlopen(' http://feeds.huffingtonpost.com/huffingtonpost/LatestNews').read()'? –