我是python的新手。写了一个小程序来获取页面中的所有链接。我使用的是Python 2.7,它是Ubuntu的一个。我使用不同的源代码将代码放在一起,但似乎我要么丢失了一个库,要么为错误版本的python使用正确的库。在python中安装urlib和beautifulsoup 2.7
import sys
from bs4 import *
import urllib2
import re
if len(sys.argv) != 2:
print "USAGE:"
print "Python test.py Your_URL"
else:
url = sys.argv[1]
html_page = urllib2.urlopen(url)
soup = BeautifulSoup(html_page)
for link in soup.findAll('a'):
print link.get('href')
我收到此错误:
Traceback (most recent call last):
File "test.py", line 12, in <module>
html_page = urllib2.urlopen(url)
File "/usr/lib/python2.7/urllib2.py", line 154, in urlopen
return opener.open(url, data, timeout)
File "/usr/lib/python2.7/urllib2.py", line 421, in open
protocol = req.get_type()
File "/usr/lib/python2.7/urllib2.py", line 283, in get_type
raise ValueError, "unknown url type: %s" % self.__original
ValueError: unknown url type: www.cs.odu.edu
我已经安装了BS4,urlib蟒蛇后。还是一样的错误。
sudo易于安装python
sudo易于安装python-PIP
须藤PIP安装BS4
谢谢!工作完美! –