Question

我的python脚本读取 XML文件，以提供文件夹结构。

我的XML文件：

<?xml version="1.0" encoding="utf-8"?>
<serverfiles name="Test">
  <serverfiles name="Fail">
    <serverfiles name="Cam1">
      <serverfiles name="Mod1">
        <serverfiles name="2019-01-07" />
        <serverfiles name="2019-01-08" />
      </serverfiles>
      <serverfiles name="Mod2">
        <serverfiles name="2019-02-07" />
        <serverfiles name="2019-02-08" />
      </serverfiles>
    </serverfiles>
  </serverfiles>
  <serverfiles name="Pass">
    <serverfiles name="Cam1">
      <serverfiles name="Mod1">
        <serverfiles name="2019-03-07" />
        <serverfiles name="2019-03-08" />
      </serverfiles>
      <serverfiles name="Mod2">
        <serverfiles name="2019-04-07" />
        <serverfiles name="2019-04-08" />
      </serverfiles>
    </serverfiles>
  </serverfiles>
</serverfiles>

Python脚本：

from pprint import pprint
import xml.etree.ElementTree as ET

def walk(e):
    name = e.attrib['name']
    children = [walk(c) for c in e if e.tag == 'serverfiles']
    return {'name': name, 'children': children} if children else {'name': name, 'path': ''}

file = ET.parse(r'folder_structure.xml')
r = file.getroot()
s = walk(r)
pprint(s)

这产生以下输出：

{'children': [{'children': [{'children': [{'children': [{'name': '2019-01-07',
                                                         'path': ''},
                                                        {'name': '2019-01-08',
                                                         'path': ''}],
                                           'name': 'Mod1'},
                                          {'children': [{'name': '2019-02-07',
                                                         'path': ''},
                                                        {'name': '2019-02-08',
                                                         'path': ''}],
                                           'name': 'Mod2'}],
                             'name': 'Cam1'}],
               'name': 'Fail'},
              {'children': [{'children': [{'children': [{'name': '2019-03-07',
                                                         'path': ''},
                                                        {'name': '2019-03-08',
                                                         'path': ''}],
                                           'name': 'Mod1'},
                                          {'children': [{'name': '2019-04-07',
                                                         'path': ''},
                                                        {'name': '2019-04-08',
                                                         'path': ''}],
                                           'name': 'Mod2'}],
                             'name': 'Cam1'}],
               'name': 'Pass'}],  'name': 'Test'}

但是我的所需输出是：

{'children': [{'children': [{'children': [{'children': [{'name': '2019-01-07',
                                                         'path': '/Test/Fail/Cam1/Mod1/'},
                                                        {'name': '2019-01-08',
                                                         'path': '/Test/Fail/Cam1/Mod1/'}],
                                           'name': 'Mod1'},
                                          {'children': [{'name': '2019-02-07',
                                                         'path': '/Test/Fail/Cam1/Mod2/'},
                                                        {'name': '2019-02-08',
                                                         'path': '/Test/Fail/Cam1/Mod2/'}],
                                           'name': 'Mod2'}],
                             'name': 'Cam1'}],
               'name': 'Fail'},
              {'children': [{'children': [{'children': [{'name': '2019-03-07',
                                                         'path': '/Test/Pass/Cam1/Mod1/'},
                                                        {'name': '2019-03-08',
                                                         'path': '/Test/Pass/Cam1/Mod1/'}],
                                           'name': 'Mod1'},
                                          {'children': [{'name': '2019-04-07',
                                                         'path': '/Test/Pass/Cam1/Mod2/'},
                                                        {'name': '2019-04-08',
                                                         'path': '/Test/Pass/Cam1/Mod2/'}],
                                           'name': 'Mod2'}],
                             'name': 'Cam1'}],
               'name': 'Pass'}],  'name': 'Test'}

我已经介绍了access ElementTree node parent node和how to get xpath from root in python while parsing xml，但无法提出解决方案。

如何在解析 XML文件的同时获取每个叶节点的路径（从根节点开始）？ / p>

Answer 1

您可能忘记了跟踪最终路径所需的运行名称。对于一般用例，我可能是错的，但是下面的脚本应该可以解决您遇到的特定问题。

from pprint import pprint
import xml.etree.ElementTree as ET


def walk(e, runningname=''):
    name = e.attrib['name']

    # TODO: checking whether this is the leaf node
    # perhaps there are better ways
    if len(e) > 0:
        runningname += f'/{name}'

    children = [walk(c, runningname) for c in e if e.tag == 'serverfiles']

    return {'name': name, 'children': children} if children else {'name': name, 'path': runningname}


file = ET.parse(r'r.xml')
r = file.getroot()
s = walk(r)
pprint(s)

获取所有叶节点的路径（从根节点）？

1 个答案: