用 python 和 lxml 解析 vcxproj

Question

我正在尝试使用 Python 和 lxml 解析 vcxproj。当我尝试这样做时，除非我删除 <Project > 中的内容，否则打印过程中不会出现任何内容。

这是我的 .vcxproj（我将其简化为测试）：

<?xml version="1.0" encoding="utf-8"?>
<Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <ItemGroup Label="ProjectConfigurations">
    <ProjectConfiguration Include="Debug|Win32">
      <Configuration>Debug</Configuration>
      <Platform>Win32</Platform>
    </ProjectConfiguration>
    <ProjectConfiguration Include="Debug|x64">
      <Configuration>Debug</Configuration>
      <Platform>x64</Platform>
    </ProjectConfiguration>
    <ProjectConfiguration Include="ReleaseDebug|Win32">
      <Configuration>ReleaseDebug</Configuration>
      <Platform>Win32</Platform>
    </ProjectConfiguration>
    <ProjectConfiguration Include="ReleaseDebug|x64">
      <Configuration>ReleaseDebug</Configuration>
      <Platform>x64</Platform>
    </ProjectConfiguration>
    <ProjectConfiguration Include="Release|Win32">
      <Configuration>Release</Configuration>
      <Platform>Win32</Platform>
    </ProjectConfiguration>
    <ProjectConfiguration Include="Release|x64">
      <Configuration>Release</Configuration>
      <Platform>x64</Platform>
    </ProjectConfiguration>
  </ItemGroup>
</Project>

还有我的python代码：

#!/usr/bin/python3
# -*- coding: utf-8 -*-

from lxml import etree

tree = etree.parse("core.xml")

for conf in tree.xpath("/Project/ItemGroup/ProjectConfiguration/Configuration"):
    print(conf.text)

如果我这样运行，脚本可以运行但什么也不显示。如果我在节点 Project 脚本中删除 DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" 脚本有效...

我是 xml 新手，也许我做错了什么。你能帮我解决这个问题吗？

感谢您的帮助。

Answer 1

在这里找到解决方案：lxml etree xmlparser remove unwanted namespace

看来，我必须在之前（如果有的话）这样精确命名空间：

from lxml import etree

tree = etree.parse("core.xml")

namespaces = {'ns':'http://schemas.microsoft.com/developer/msbuild/2003'}
for conf in tree.xpath('//ns:Configuration', namespaces=namespaces):
    print (conf.text)