python - lxml 中的解析函数出错

Question

我已经在 windows 平台上安装了 lxml2.2.2(我使用的是 python 版本 2.6.5)。我尝试了这个简单的命令:

from lxml.html import parse 
p= parse(‘http://www.google.com’).getroot()

但我收到以下错误:

Traceback (most recent call last):
File “”, line 1, in p=parse(‘http://www.google.com’).getroot()
File “C:\Python26\lib\site-packages\lxml-2.2.2-py2.6-win32.egg\lxml\html_init_.py”, line 661, in parse return etree.parse(filenameorurl, parser, baseurl=baseurl, **kw) 
File “lxml.etree.pyx”, line 2698, in lxml.etree.parse (src/lxml/lxml.etree.c:49590) 
File “parser.pxi”, line 1491, in lxml.etree.parseDocument (src/lxml/lxml.etree.c:71205) File “parser.pxi”, line 1520, in lxml.etree.parseDocumentFromURL (src/lxml/lxml.etree.c:71488) 
File “parser.pxi”, line 1420, in lxml.etree.parseDocFromFile (src/lxml/lxml.etree.c:70583)
File “parser.pxi”, line 975, in lxml.etree.BaseParser.parseDocFrom
File (src/lxml/lxml.etree.c:67736)
File “parser.pxi”, line 539, in lxml.etree.ParserContext.handleParseResultDoc (src/lxml/lxml.etree.c:63820) 
File “parser.pxi”, line 625, in lxml.etree.handleParseResult (src/lxml/lxml.etree.c:64741)
File “parser.pxi”, line 563, in lxml.etree._raiseParseError (src/lxml/lxml.etree.c:64056)
IOError: Error reading file ‘http://www.google.com’: failed to load external entity “http://www.google.com”

作为 python 的新手，我不知道下一步该怎么做。请指导我解决这个错误。提前致谢!! :)

Answer 1

lxml.html.parse 不获取 URL。

以下是使用 urllib2 的方法:

>>> from urllib2 import urlopen
>>> from lxml.html import parse
>>> page = urlopen('http://www.google.com')
>>> p = parse(page)
>>> p.getroot()
<Element html at 1304050>

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更新
史蒂文是对的。 lxml.etree.parse 应该接受并加载 URL。我错过了。我试过删除这个答案，但不允许。

我收回关于它不获取 URL 的声明。