<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Typing on PlumePHP</title><link>https://plumephp.com/tags/typing/</link><description>Recent content in Typing on PlumePHP</description><generator>Hugo</generator><language>zh-CN</language><lastBuildDate>Sat, 01 Aug 2026 11:00:00 +0800</lastBuildDate><atom:link href="https://plumephp.com/tags/typing/index.xml" rel="self" type="application/rss+xml"/><item><title>Python 类型系统与 Pydantic V2：从注解到极致运行时验证</title><link>https://plumephp.com/python-typing-pydantic/</link><pubDate>Sat, 01 Aug 2026 11:00:00 +0800</pubDate><guid>https://plumephp.com/python-typing-pydantic/</guid><description>&lt;blockquote&gt;
&lt;p&gt;渐进式类型是 Python 的骄傲——你可以从「零注解」的脚本平滑过渡到「全注解」的工程代码。本文覆盖完整路径。&lt;/p&gt;
&lt;/blockquote&gt;
&lt;hr&gt;
&lt;h2 id="1-python-类型注解基础"&gt;1. Python 类型注解基础&lt;/h2&gt;
&lt;h3 id="11-内置类型python-39-语法"&gt;1.1 内置类型（Python 3.9+ 语法）&lt;/h3&gt;
&lt;p&gt;Python 3.9 起，内置集合类型支持泛型语法，无需导入 &lt;code&gt;typing&lt;/code&gt;：&lt;/p&gt;</description></item></channel></rss>