增加python文档

2025-03-09 17:10:56 +08:00
parent 7153217140
commit 723430cade
1039 changed files with 699509 additions and 0 deletions
--- a/web/python-docs/library/imghdr.html
+++ b/web/python-docs/library/imghdr.html
@@ -0,0 +1,337 @@
+
+<!DOCTYPE html>
+
+<html xmlns="http://www.w3.org/1999/xhtml" lang="zh_CN">
+  <head>
+    <meta charset="utf-8" /><meta name="generator" content="Docutils 0.17.1: http://docutils.sourceforge.net/" />
+
+    <title>imghdr --- 推测图像类型 &#8212; Python 3.8.20 文档</title><meta name="viewport" content="width=device-width, initial-scale=1.0">
+    
+    <link rel="stylesheet" href="../_static/pydoctheme.css" type="text/css" />
+    <link rel="stylesheet" href="../_static/pygments.css" type="text/css" />
+    
+    <script id="documentation_options" data-url_root="../" src="../_static/documentation_options.js"></script>
+    <script src="../_static/jquery.js"></script>
+    <script src="../_static/underscore.js"></script>
+    <script src="../_static/doctools.js"></script>
+    <script src="../_static/language_data.js"></script>
+    <script src="../_static/translations.js"></script>
+    
+    <script src="../_static/sidebar.js"></script>
+    
+    <link rel="search" type="application/opensearchdescription+xml"
+          title="在 Python 3.8.20 文档 中搜索"
+          href="../_static/opensearch.xml"/>
+    <link rel="author" title="关于这些文档" href="../about.html" />
+    <link rel="index" title="索引" href="../genindex.html" />
+    <link rel="search" title="搜索" href="../search.html" />
+    <link rel="copyright" title="版权所有" href="../copyright.html" />
+    <link rel="next" title="sndhdr --- 推测声音文件的类型" href="sndhdr.html" />
+    <link rel="prev" title="colorsys --- 颜色系统间的转换" href="colorsys.html" />
+    <link rel="canonical" href="https://docs.python.org/3/library/imghdr.html" />
+    
+      
+    
+
+    
+    <style>
+      @media only screen {
+        table.full-width-table {
+            width: 100%;
+        }
+      }
+    </style>
+<link rel="shortcut icon" type="image/png" href="../_static/py.svg" />
+            <script type="text/javascript" src="../_static/copybutton.js"></script>
+            <script type="text/javascript" src="../_static/menu.js"></script> 
+
+  </head>
+<body>
+<div class="mobile-nav">
+    <input type="checkbox" id="menuToggler" class="toggler__input" aria-controls="navigation"
+           aria-pressed="false" aria-expanded="false" role="button" aria-label="Menu" />
+    <label for="menuToggler" class="toggler__label">
+        <span></span>
+    </label>
+    <nav class="nav-content" role="navigation">
+         <a href="https://www.python.org/" class="nav-logo">
+             <img src="../_static/py.svg" alt="Logo"/>
+         </a>
+        <div class="version_switcher_placeholder"></div>
+        <form role="search" class="search" action="../search.html" method="get">
+            <svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" class="search-icon">
+                <path fill-rule="nonzero"
+                        d="M15.5 14h-.79l-.28-.27a6.5 6.5 0 001.48-5.34c-.47-2.78-2.79-5-5.59-5.34a6.505 6.505 0 00-7.27 7.27c.34 2.8 2.56 5.12 5.34 5.59a6.5 6.5 0 005.34-1.48l.27.28v.79l4.25 4.25c.41.41 1.08.41 1.49 0 .41-.41.41-1.08 0-1.49L15.5 14zm-6 0C7.01 14 5 11.99 5 9.5S7.01 5 9.5 5 14 7.01 14 9.5 11.99 14 9.5 14z" fill="#444"></path>
+            </svg>
+            <input type="text" name="q" aria-label="快速搜索"/>
+            <input type="submit" value="转向"/>
+        </form>
+    </nav>
+    <div class="menu-wrapper">
+        <nav class="menu" role="navigation" aria-label="main navigation">
+            <div class="language_switcher_placeholder"></div>
+  <h4>上一个主题</h4>
+  <p class="topless"><a href="colorsys.html"
+                        title="上一章"><code class="xref py py-mod docutils literal notranslate"><span class="pre">colorsys</span></code> --- 颜色系统间的转换</a></p>
+  <h4>下一个主题</h4>
+  <p class="topless"><a href="sndhdr.html"
+                        title="下一章"><code class="xref py py-mod docutils literal notranslate"><span class="pre">sndhdr</span></code> --- 推测声音文件的类型</a></p>
+  <div role="note" aria-label="source link">
+    <h3>本页</h3>
+    <ul class="this-page-menu">
+      <li><a href="../bugs.html">报告 Bug</a></li>
+      <li>
+        <a href="https://github.com/python/cpython/blob/3.8/Doc/library/imghdr.rst"
+            rel="nofollow">显示源代码
+        </a>
+      </li>
+    </ul>
+  </div>
+        </nav>
+    </div>
+</div>
+
+<div id="outdated-warning" style="padding: .5em; text-align: center; background-color: #FFBABA; color: #6A0E0E;">
+    这个文档所针对的是一个已不再受支持的 Python 旧版本。
+    你应当升级版本，并阅读 
+    <a href="/3/library/imghdr.html"> Python 当前稳定版本的文档</a>.
+</div>
+  
+    <div class="related" role="navigation" aria-label="related navigation">
+      <h3>导航</h3>
+      <ul>
+        <li class="right" style="margin-right: 10px">
+          <a href="../genindex.html" title="总目录"
+             accesskey="I">索引</a></li>
+        <li class="right" >
+          <a href="../py-modindex.html" title="Python 模块索引"
+             >模块</a> |</li>
+        <li class="right" >
+          <a href="sndhdr.html" title="sndhdr --- 推测声音文件的类型"
+             accesskey="N">下一页</a> |</li>
+        <li class="right" >
+          <a href="colorsys.html" title="colorsys --- 颜色系统间的转换"
+             accesskey="P">上一页</a> |</li>
+
+          <li><img src="../_static/py.svg" alt="python logo" style="vertical-align: middle; margin-top: -1px"/></li>
+          <li><a href="https://www.python.org/">Python</a> &#187;</li>
+          <li class="switchers">
+            <div class="language_switcher_placeholder"></div>
+            <div class="version_switcher_placeholder"></div>
+          </li>
+          <li>
+              
+          </li>
+    <li id="cpython-language-and-version">
+      <a href="../index.html">3.8.20 Documentation</a> &#187;
+    </li>
+
+          <li class="nav-item nav-item-1"><a href="index.html" >Python 标准库</a> &#187;</li>
+          <li class="nav-item nav-item-2"><a href="mm.html" accesskey="U">多媒体服务</a> &#187;</li>
+                <li class="right">
+                    
+
+    <div class="inline-search" role="search">
+        <form class="inline-search" action="../search.html" method="get">
+          <input placeholder="快速搜索" aria-label="快速搜索" type="text" name="q" />
+          <input type="submit" value="转向" />
+          <input type="hidden" name="check_keywords" value="yes" />
+          <input type="hidden" name="area" value="default" />
+        </form>
+    </div>
+                     |
+                </li>
+            
+      </ul>
+    </div>    
+
+    <div class="document">
+      <div class="documentwrapper">
+        <div class="bodywrapper">
+          <div class="body" role="main">
+            
+  <section id="module-imghdr">
+<span id="imghdr-determine-the-type-of-an-image"></span><h1><a class="reference internal" href="#module-imghdr" title="imghdr: Determine the type of image contained in a file or byte stream."><code class="xref py py-mod docutils literal notranslate"><span class="pre">imghdr</span></code></a> --- 推测图像类型<a class="headerlink" href="#module-imghdr" title="永久链接至标题">¶</a></h1>
+<p><strong>源代码</strong> <a class="reference external" href="https://github.com/python/cpython/tree/3.8/Lib/imghdr.py">Lib/imghdr.py</a></p>
+<hr class="docutils" />
+<p><a class="reference internal" href="#module-imghdr" title="imghdr: Determine the type of image contained in a file or byte stream."><code class="xref py py-mod docutils literal notranslate"><span class="pre">imghdr</span></code></a> 模块推测文件或字节流中的图像的类型。</p>
+<p><a class="reference internal" href="#module-imghdr" title="imghdr: Determine the type of image contained in a file or byte stream."><code class="xref py py-mod docutils literal notranslate"><span class="pre">imghdr</span></code></a> 模块定义了以下类型：</p>
+<dl class="function">
+<dt id="imghdr.what">
+<code class="sig-prename descclassname">imghdr.</code><code class="sig-name descname">what</code><span class="sig-paren">(</span><em class="sig-param">filename</em>, <em class="sig-param">h=None</em><span class="sig-paren">)</span><a class="headerlink" href="#imghdr.what" title="永久链接至目标">¶</a></dt>
+<dd><p>测试包含在命名为 <em>filename</em> 的文件中的图像数据，并且返回描述此类图片的字符串。如果可选的 <em>h</em> 被提供， <em>filename</em> 将被忽略并且 <em>h</em> 包含将被测试的二进制流。</p>
+<div class="versionchanged">
+<p><span class="versionmodified changed">在 3.6 版更改: </span>接受一个 <a class="reference internal" href="../glossary.html#term-path-like-object"><span class="xref std std-term">path-like object</span></a>。</p>
+</div>
+</dd></dl>
+
+<p>接下来的图像类型是可识别的，返回值来自 <a class="reference internal" href="#imghdr.what" title="imghdr.what"><code class="xref py py-func docutils literal notranslate"><span class="pre">what()</span></code></a>：</p>
+<table class="docutils align-default">
+<colgroup>
+<col style="width: 26%" />
+<col style="width: 74%" />
+</colgroup>
+<thead>
+<tr class="row-odd"><th class="head"><p>值</p></th>
+<th class="head"><p>图像格式</p></th>
+</tr>
+</thead>
+<tbody>
+<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">'rgb'</span></code></p></td>
+<td><p>SGI 图像库文件</p></td>
+</tr>
+<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">'gif'</span></code></p></td>
+<td><p>GIF 87a 和 89a 文件</p></td>
+</tr>
+<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">'pbm'</span></code></p></td>
+<td><p>便携式位图文件</p></td>
+</tr>
+<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">'pgm'</span></code></p></td>
+<td><p>便携式灰度图文件</p></td>
+</tr>
+<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">'ppm'</span></code></p></td>
+<td><p>便携式像素表文件</p></td>
+</tr>
+<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">'tiff'</span></code></p></td>
+<td><p>TIFF 文件</p></td>
+</tr>
+<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">'rast'</span></code></p></td>
+<td><p>Sun 光栅文件</p></td>
+</tr>
+<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">'xbm'</span></code></p></td>
+<td><p>X 位图文件</p></td>
+</tr>
+<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">'jpeg'</span></code></p></td>
+<td><p>JFIF 或 Exif 格式的 JPEG 数据</p></td>
+</tr>
+<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">'bmp'</span></code></p></td>
+<td><p>BMP 文件</p></td>
+</tr>
+<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">'png'</span></code></p></td>
+<td><p>便携式网络图像</p></td>
+</tr>
+<tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">'webp'</span></code></p></td>
+<td><p>WebP 文件</p></td>
+</tr>
+<tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">'exr'</span></code></p></td>
+<td><p>OpenEXR 文件</p></td>
+</tr>
+</tbody>
+</table>
+<div class="versionadded">
+<p><span class="versionmodified added">3.5 新版功能: </span><em>exr</em> 和 <em>webp</em> 格式被添加。</p>
+</div>
+<p>你可以扩展此 <a class="reference internal" href="#module-imghdr" title="imghdr: Determine the type of image contained in a file or byte stream."><code class="xref py py-mod docutils literal notranslate"><span class="pre">imghdr</span></code></a> 可以被追加的这个变量识别的文件格式的列表：</p>
+<dl class="data">
+<dt id="imghdr.tests">
+<code class="sig-prename descclassname">imghdr.</code><code class="sig-name descname">tests</code><a class="headerlink" href="#imghdr.tests" title="永久链接至目标">¶</a></dt>
+<dd><p>执行单个测试的函数列表。每个函数都有两个参数：字节流和类似开放文件的对象。当 <a class="reference internal" href="#imghdr.what" title="imghdr.what"><code class="xref py py-func docutils literal notranslate"><span class="pre">what()</span></code></a> 用字节流调用时，类文件对象将是 <code class="docutils literal notranslate"><span class="pre">None</span></code>。</p>
+<p>如果测试成功，这个测试函数应当返回一个描述图像类型的字符串，否则返回 <code class="docutils literal notranslate"><span class="pre">None</span></code>。</p>
+</dd></dl>
+
+<p>示例:</p>
+<div class="highlight-python3 notranslate"><div class="highlight"><pre><span></span><span class="gp">&gt;&gt;&gt; </span><span class="kn">import</span> <span class="nn">imghdr</span>
+<span class="gp">&gt;&gt;&gt; </span><span class="n">imghdr</span><span class="o">.</span><span class="n">what</span><span class="p">(</span><span class="s1">&#39;bass.gif&#39;</span><span class="p">)</span>
+<span class="go">&#39;gif&#39;</span>
+</pre></div>
+</div>
+</section>
+
+
+          </div>
+        </div>
+      </div>
+      <div class="sphinxsidebar" role="navigation" aria-label="main navigation">
+        <div class="sphinxsidebarwrapper">
+  <h4>上一个主题</h4>
+  <p class="topless"><a href="colorsys.html"
+                        title="上一章"><code class="xref py py-mod docutils literal notranslate"><span class="pre">colorsys</span></code> --- 颜色系统间的转换</a></p>
+  <h4>下一个主题</h4>
+  <p class="topless"><a href="sndhdr.html"
+                        title="下一章"><code class="xref py py-mod docutils literal notranslate"><span class="pre">sndhdr</span></code> --- 推测声音文件的类型</a></p>
+  <div role="note" aria-label="source link">
+    <h3>本页</h3>
+    <ul class="this-page-menu">
+      <li><a href="../bugs.html">报告 Bug</a></li>
+      <li>
+        <a href="https://github.com/python/cpython/blob/3.8/Doc/library/imghdr.rst"
+            rel="nofollow">显示源代码
+        </a>
+      </li>
+    </ul>
+  </div>
+        </div>
+      </div>
+      <div class="clearer"></div>
+    </div>  
+    <div class="related" role="navigation" aria-label="related navigation">
+      <h3>导航</h3>
+      <ul>
+        <li class="right" style="margin-right: 10px">
+          <a href="../genindex.html" title="总目录"
+             >索引</a></li>
+        <li class="right" >
+          <a href="../py-modindex.html" title="Python 模块索引"
+             >模块</a> |</li>
+        <li class="right" >
+          <a href="sndhdr.html" title="sndhdr --- 推测声音文件的类型"
+             >下一页</a> |</li>
+        <li class="right" >
+          <a href="colorsys.html" title="colorsys --- 颜色系统间的转换"
+             >上一页</a> |</li>
+
+          <li><img src="../_static/py.svg" alt="python logo" style="vertical-align: middle; margin-top: -1px"/></li>
+          <li><a href="https://www.python.org/">Python</a> &#187;</li>
+          <li class="switchers">
+            <div class="language_switcher_placeholder"></div>
+            <div class="version_switcher_placeholder"></div>
+          </li>
+          <li>
+              
+          </li>
+    <li id="cpython-language-and-version">
+      <a href="../index.html">3.8.20 Documentation</a> &#187;
+    </li>
+
+          <li class="nav-item nav-item-1"><a href="index.html" >Python 标准库</a> &#187;</li>
+          <li class="nav-item nav-item-2"><a href="mm.html" >多媒体服务</a> &#187;</li>
+                <li class="right">
+                    
+
+    <div class="inline-search" role="search">
+        <form class="inline-search" action="../search.html" method="get">
+          <input placeholder="快速搜索" aria-label="快速搜索" type="text" name="q" />
+          <input type="submit" value="转向" />
+          <input type="hidden" name="check_keywords" value="yes" />
+          <input type="hidden" name="area" value="default" />
+        </form>
+    </div>
+                     |
+                </li>
+            
+      </ul>
+    </div>  
+    <div class="footer">
+    &copy; <a href="../copyright.html">版权所有</a> 2001-2024, Python Software Foundation.
+    <br />
+    This page is licensed under the Python Software Foundation License Version 2.
+    <br />
+    Examples, recipes, and other code in the documentation are additionally licensed under the Zero Clause BSD License.
+    <br />
+    
+    <br />
+
+    The Python Software Foundation is a non-profit corporation.
+<a href="https://www.python.org/psf/donations/">Please donate.</a>
+<br />
+    <br />
+
+    最后更新于 12月 09, 2024.
+    <a href="https://docs.python.org/3/bugs.html">Found a bug</a>?
+    <br />
+
+    Created using <a href="https://www.sphinx-doc.org/">Sphinx</a> 2.4.4.
+    </div>
+
+  </body>
+</html>