Question

我正在尝试从Yahoo finance API读取XML文件。到目前为止，我已尝试过以下方法：

 from xml.dom.minidom import parse
 #Start Get Employees
        xml = urllib.request.urlopen('https://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20yahoo.finance.stocks%20where%20symbol%3D%22wfc%22&diagnostics=true&env=store%3A%2F%2Fdatatables.org%2Falltableswithkeys')
        dom = parse(xml.read())
        numemployees = dom.getElementsByTagName('FullTimeEmployees')
        numemployees = name[0].firstChild.nodeValue
 #End Get Employees

然而，这引起了例外：

AttributeError: 'bytes' object has no attribute 'read'

我认为这是因为如果它不识别字符串，则假定我传递了一个字节模式。但是，我正在传递一个字符串，所以我不知道这里的问题是什么。

完整堆栈跟踪：

Traceback (most recent call last):
  File "C:\Python34\lib\tkinter\__init__.py", line 1487, in __call__
    return self.func(*args)
  File "C:\Users\kylec\Desktop\dm\Mail Server Finder\mailserverfinder.py", line 25, in getServers
    dom = parse(xml.read())
  File "C:\Python34\lib\xml\dom\minidom.py", line 1960, in parse
    return expatbuilder.parse(file)
  File "C:\Python34\lib\xml\dom\expatbuilder.py", line 913, in parse
    result = builder.parseFile(file)
  File "C:\Python34\lib\xml\dom\expatbuilder.py", line 204, in parseFile
    buffer = file.read(16*1024)
AttributeError: 'bytes' object has no attribute 'read'

Answer 1

xml.dom.minidom.parse不是文件类对象，而是bytes或str，如文档中所述：

xml.dom.minidom.parse（filename_or_file [，parser [，bufsize]]）

从给定输入中返回文档。 filename_or_file可以是     文件名或文件类对象。

所以你只需要这样做：

dom = parse(xml)

因为http.client.HTTPResponse返回的urlopen对象与文件类似。

Answer 2

凯尔，对不起，但你的榜样不够明确。我认为这是你期望的。

from xml.dom.minidom import parseString

employees = urllib.urlopen('https://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20yahoo.finance.stocks%20where%20symbol%3D%22wfc%22&diagnostics=true&env=store%3A%2F%2Fdatatables.org%2Falltableswithkeys').read()
dom = parseString(employees)
numemployees = dom.getElementsByTagName('FullTimeEmployees')
numemployees = numeemployees[0].firstChild.nodeValue

传递一个字符串但得到字节属性错误到urllib.request.read

2 个答案: