Question

请帮助解析来自互联网的文件。

import pprint
import xml.dom.minidom
from xml.dom.minidom import Node

import requests

addr = requests.get('http://fh79272k.bget.ru/py_test/books.xml')
print(addr.status_code)

doc = xml.dom.minidom.parse(str(addr))          # load doc into object
                                                  # usually parsed up front


mapping = {}
for node in doc.getElementsByTagName("book"):     # traverse DOM object
    isbn = node.getAttribute("isbn")              # via DOM object API
    L = node.getElementsByTagName("title")
    for node2 in L:
        title = ""
        for node3 in node2.childNodes:
            if node3.nodeType == Node.TEXT_NODE:
                title += node3.data 
        mapping[isbn] = title

# mapping now has the same value as in the SAX example
pprint.pprint(mapping)

此脚本不起作用。错误信息是：

Traceback（最近一次调用最后一次）：文件 “C：\ VINT \ OPENSERVER \ OpenServer的\域\本地主机\蟒\ parse_html \ 1个\ dombook.py”，第14行 doc = xml.dom.minidom.parse（str（addr））#doc doc into object File“C：\ Python33 \ lib \ xml \ dom \ minidom.py”，1960年，in 解析 return expatbuilder.parse（file）文件“C：\ Python33 \ lib \ xml \ dom \ expatbuilder.py”，第908行，解析 fp = open（file，'rb'）OSError：[Errno 22]无效参数：''

XML：

<catalog>
<book isbn="0-596-00128-2">
<title>Python & XML</title>
<date>December 2001</date>
<author>Jones, Drake</author>
</book>
<book isbn="0-596-15810-6">
<title>Programming Python, 4th Edition</title>
<date>October 2010</date>
<author>Lutz</author>
</book>
<book isbn="0-596-15806-8">
<title>Learning Python, 4th Edition</title>
<date>September 2009</date>
<author>Lutz</author>
</book>
<book isbn="0-596-15808-4">
<title>Python Pocket Reference, 4th Edition</title>
<date>October 2009</date>
<author>Lutz</author>
</book>
<book isbn="0-596-00797-3">
<title>Python Cookbook, 2nd Edition</title>
<date>March 2005</date>
<author>Martelli, Ravenscroft, Ascher</author>
</book>
<book isbn="0-596-10046-9">
<title>Python in a Nutshell, 2nd Edition</title>
<date>July 2006</date>
<author>Martelli</author>
</book>
<!--
 plus many more Python books that should appear here 
-->
</catalog>

Answer 1

您正在从响应对象构建XML，而不是从正文中的文本构建XML。而不是str(addr)，请使用addr.text：

doc = xml.dom.minidom.parse(addr.text)

此外，使用XML解析器来处理HTML是很麻烦的。尝试使用Beautiful Soup。

如何解析远程文件？

1 个答案: