如何使用python解析XML [英] How to parse XML using python

问题描述

我正在尝试使用python解析xml以创建结果摘要文件.下面是我的代码和xml片段，就像下面的一样，我有几个部分分别为<test>和</test>

I am trying to parse an xml using python for create a result summary file. Below is my code and a snippet of xml, Like the below i have couple of sections with <test> and </test>

<test name="tst_case1">
  <prolog time="2013-01-18T14:41:09+05:30"/> 
  <verification name="VP5" file="D:/Squish/HMI_testing/tst_case1/test.py" type="properties" line="6"> 
    <result time="2013-01-18T14:41:10+05:30" type="PASS"> 
      <description>VP5: Object propertycomparisonof ':_QMenu_3.enabled'passed</description>        <description type="DETAILED">'false' and 'false' are equal</description> 
      <description type="object">:_QMenu_3</description> 
      <description type="property">enabled</description> 
      <description type="failedValue">false</description> 
    </result> 
  </verification>
  <epilog time="2013-01-18T14:41:11+05:30"/> 
</test>

我想得到的是， 在<test>部分中，有多少个通过/失败.

What I want to get is, in one <test> section how many PASS / FAIL is there.

使用下面的代码在xml文件中打印总的通过/失败.但是我对每个部分中有多少个通过/失败感兴趣.有哪个男孩能告诉我提取这个东西的程序吗?

With the below code its printing the total pass/Fail in the xml file.But i am interested in each section how many PASS/FAIL. can any boy tell me the procedure to fetchout this ?

import sys
import xml.dom.minidom as XY

file = open("result.txt", "w")
tree = XY.parse('D:\\Squish\\squish results\\Results-On-2013-01-18_0241 PM.xml')
Test_name = tree.getElementsByTagName('test')
Test_status = tree.getElementsByTagName('result')
count_testname =0
passcount = 0
failcount = 0
Test_name_array = []
for my_Test_name in Test_name:
    count_testname = count_testname+1
    passcount = 0
    failcount = 0
    my_Test_name_final = my_Test_name.getAttribute('name')
    Test_name_array = my_Test_name_final
    if(count_testname > 1):
        print(my_Test_name_final)
        for my_Test_status in Test_status:
            my_Test_status_final = my_Test_status.getAttribute('type')
            if(my_Test_status_final == 'PASS'):
               passcount = passcount+1
            if(my_Test_status_final == 'FAIL'):
               failcount = failcount+1
            print(str(my_Test_status_final))

推荐答案

我不会为此任务使用minidom； DOM API非常繁琐，冗长，不适合搜索和匹配.

I'd not use minidom for this task; the DOM API is very cumbersome, verbose, and not suited for searching and matching.

Python库还包含 xml.etree.ElementTree API ，我会改用它:

The Python library also includes the xml.etree.ElementTree API, I'd use that instead:

from xml.etree import ElementTree as ET

tree = ET.parse(r'D:\Squish\squish results\Results-On-2013-01-18_0241 PM.xml')
tests = dict()

# Find all <test> elements with a <verification> child:
for test in tree.findall('.//test[verification]'):
    passed = len(test.findall(".//result[@type='PASS']"))
    failed = len(test.findall(".//result[@type='FAIL']"))
    tests[test.attrib['name']] = {'pass': passed, 'fail': failed}

上面的代码对每个<test>元素的通过和失败测试的次数进行计数，并将它们存储在字典中，该字典的键为<test>元素的name属性.

The above piece of code counts the number of passed and failed tests per <test> element and stores them in a dictionary, keyed to the name attribute of the <test> element.

我已经使用Python 3.2和您发布的另一个问题中的完整XML文档，结果为:

I've tested the above code with Python 3.2 and the full XML document from another question you posted, which results in:

{'tst_Setup_menu_2': {'fail': 0, 'pass': 8}}

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