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<li><a class="reference internal" href="#"><code class="xref py py-mod docutils literal notranslate"><span class="pre">http.cookies</span></code> --- HTTP状态管理</a><ul>
<li><a class="reference internal" href="#cookie-objects">Cookie 对象</a></li>
<li><a class="reference internal" href="#morsel-objects">Morsel 对象</a></li>
<li><a class="reference internal" href="#example">示例</a></li>
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<section id="module-http.cookies">
<span id="http-cookies-http-state-management"></span><h1><a class="reference internal" href="#module-http.cookies" title="http.cookies: Support for HTTP state management (cookies)."><code class="xref py py-mod docutils literal notranslate"><span class="pre">http.cookies</span></code></a> --- HTTP状态管理<a class="headerlink" href="#module-http.cookies" 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/http/cookies.py">Lib/http/cookies.py</a></p>
<hr class="docutils" />
<p><a class="reference internal" href="#module-http.cookies" title="http.cookies: Support for HTTP state management (cookies)."><code class="xref py py-mod docutils literal notranslate"><span class="pre">http.cookies</span></code></a> 模块定义的类将 cookie 的概念抽象了出来，这是一种 HTTP 状态的管理机制。它既支持简单的纯字符串形式的 cookie，也为任何可序列化数据类型的 cookie 提供抽象。</p>
<p>以前，该模块严格套用 <span class="target" id="index-16"></span><a class="rfc reference external" href="https://tools.ietf.org/html/rfc2109.html"><strong>RFC 2109</strong></a> 和 <span class="target" id="index-17"></span><a class="rfc reference external" href="https://tools.ietf.org/html/rfc2068.html"><strong>RFC 2068</strong></a> 规范中描述的解析规则。后来人们发现，MSIE 3.0 并不遵循这些规范中的字符规则，而且目前许多浏览器和服务器在处理 cookie 时也放宽了解析规则。 因此，这里用到的解析规则没有那么严格。</p>
<p>字符集 <a class="reference internal" href="string.html#string.ascii_letters" title="string.ascii_letters"><code class="xref py py-data docutils literal notranslate"><span class="pre">string.ascii_letters</span></code></a> 、 <a class="reference internal" href="string.html#string.digits" title="string.digits"><code class="xref py py-data docutils literal notranslate"><span class="pre">string.digits</span></code></a> 和 <code class="docutils literal notranslate"><span class="pre">!#$%&amp;'*+-.^_`|~:</span></code> 给出了本模块允许出现在 cookie 名称中的有效字符集（如 <a class="reference internal" href="#http.cookies.Morsel.key" title="http.cookies.Morsel.key"><code class="xref py py-attr docutils literal notranslate"><span class="pre">key</span></code></a>）。</p>
<div class="versionchanged">
<p><span class="versionmodified changed">在 3.3 版更改: </span>“:”字符可用于有效的 cookie 名称。</p>
</div>
<div class="admonition note">
<p class="admonition-title">注解</p>
<p>当遇到无效 cookie 时会触发 <a class="reference internal" href="#http.cookies.CookieError" title="http.cookies.CookieError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">CookieError</span></code></a>，所以若 cookie 数据来自浏览器，一定要做好应对无效数据的准备，并在解析时捕获 <a class="reference internal" href="#http.cookies.CookieError" title="http.cookies.CookieError"><code class="xref py py-exc docutils literal notranslate"><span class="pre">CookieError</span></code></a>。</p>
</div>
<dl class="exception">
<dt id="http.cookies.CookieError">
<em class="property">exception </em><code class="sig-prename descclassname">http.cookies.</code><code class="sig-name descname">CookieError</code><a class="headerlink" href="#http.cookies.CookieError" title="永久链接至目标"></a></dt>
<dd><p>出现异常的原因，可能是不符合 <span class="target" id="index-18"></span><a class="rfc reference external" href="https://tools.ietf.org/html/rfc2109.html"><strong>RFC 2109</strong></a> ：属性不正确、<em class="mailheader">Set-Cookie</em> 头部信息不正确等等。</p>
</dd></dl>
<dl class="class">
<dt id="http.cookies.BaseCookie">
<em class="property">class </em><code class="sig-prename descclassname">http.cookies.</code><code class="sig-name descname">BaseCookie</code><span class="sig-paren">(</span><span class="optional">[</span><em class="sig-param">input</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#http.cookies.BaseCookie" title="永久链接至目标"></a></dt>
<dd><p>类似字典的对象，字典键为字符串，字典值是 <a class="reference internal" href="#http.cookies.Morsel" title="http.cookies.Morsel"><code class="xref py py-class docutils literal notranslate"><span class="pre">Morsel</span></code></a> 实例。请注意，在将键值关联时，首先会把值转换为包含键和值的 <a class="reference internal" href="#http.cookies.Morsel" title="http.cookies.Morsel"><code class="xref py py-class docutils literal notranslate"><span class="pre">Morsel</span></code></a> 对象。</p>
<p>若给出 <em>input</em> ，将会传给 <a class="reference internal" href="#http.cookies.BaseCookie.load" title="http.cookies.BaseCookie.load"><code class="xref py py-meth docutils literal notranslate"><span class="pre">load()</span></code></a> 方法。</p>
</dd></dl>
<dl class="class">
<dt id="http.cookies.SimpleCookie">
<em class="property">class </em><code class="sig-prename descclassname">http.cookies.</code><code class="sig-name descname">SimpleCookie</code><span class="sig-paren">(</span><span class="optional">[</span><em class="sig-param">input</em><span class="optional">]</span><span class="sig-paren">)</span><a class="headerlink" href="#http.cookies.SimpleCookie" title="永久链接至目标"></a></dt>
<dd><p>该类派生于 <a class="reference internal" href="#http.cookies.BaseCookie" title="http.cookies.BaseCookie"><code class="xref py py-class docutils literal notranslate"><span class="pre">BaseCookie</span></code></a>，并覆盖了 <code class="xref py py-meth docutils literal notranslate"><span class="pre">value_decode()</span></code> 和 <code class="xref py py-meth docutils literal notranslate"><span class="pre">value_encode()</span></code> 方法。SimpleCookie 允许用字符串作为 cookie 值。在设置值时，SimpleCookie 将调用内置的 <a class="reference internal" href="stdtypes.html#str" title="str"><code class="xref py py-func docutils literal notranslate"><span class="pre">str()</span></code></a> 将其转换为字符串。从 HTTP 接收到的值将作为字符串保存。</p>
</dd></dl>
<div class="admonition seealso">
<p class="admonition-title">参见</p>
<dl class="simple">
<dt><a class="reference internal" href="http.cookiejar.html#module-http.cookiejar" title="http.cookiejar: Classes for automatic handling of HTTP cookies."><code class="xref py py-mod docutils literal notranslate"><span class="pre">http.cookiejar</span></code></a> 模块</dt><dd><p>处理网络 <em>客户端</em> 的 HTTP cookie。 <a class="reference internal" href="http.cookiejar.html#module-http.cookiejar" title="http.cookiejar: Classes for automatic handling of HTTP cookies."><code class="xref py py-mod docutils literal notranslate"><span class="pre">http.cookiejar</span></code></a> 和 <a class="reference internal" href="#module-http.cookies" title="http.cookies: Support for HTTP state management (cookies)."><code class="xref py py-mod docutils literal notranslate"><span class="pre">http.cookies</span></code></a> 模块相互没有依赖关系。</p>
</dd>
<dt><span class="target" id="index-19"></span><a class="rfc reference external" href="https://tools.ietf.org/html/rfc2109.html"><strong>RFC 2109</strong></a> - HTTP状态管理机制</dt><dd><p>这是本模块实现的状态管理规范。</p>
</dd>
</dl>
</div>
<section id="cookie-objects">
<span id="id1"></span><h2>Cookie 对象<a class="headerlink" href="#cookie-objects" title="永久链接至标题"></a></h2>
<dl class="method">
<dt id="http.cookies.BaseCookie.value_decode">
<code class="sig-prename descclassname">BaseCookie.</code><code class="sig-name descname">value_decode</code><span class="sig-paren">(</span><em class="sig-param">val</em><span class="sig-paren">)</span><a class="headerlink" href="#http.cookies.BaseCookie.value_decode" title="永久链接至目标"></a></dt>
<dd><p>由字符串返回元组 <code class="docutils literal notranslate"><span class="pre">(real_value,</span> <span class="pre">coded_value)</span></code>。<code class="docutils literal notranslate"><span class="pre">real_value</span></code> 可为任意类型。<a class="reference internal" href="#http.cookies.BaseCookie" title="http.cookies.BaseCookie"><code class="xref py py-class docutils literal notranslate"><span class="pre">BaseCookie</span></code></a> 中的此方法未实现任何解码工作——只为能被子类重写。</p>
</dd></dl>
<dl class="method">
<dt id="http.cookies.BaseCookie.value_encode">
<code class="sig-prename descclassname">BaseCookie.</code><code class="sig-name descname">value_encode</code><span class="sig-paren">(</span><em class="sig-param">val</em><span class="sig-paren">)</span><a class="headerlink" href="#http.cookies.BaseCookie.value_encode" title="永久链接至目标"></a></dt>
<dd><p>返回元组 <code class="docutils literal notranslate"><span class="pre">(real_value,</span> <span class="pre">coded_value)</span></code>。<em>val</em> 可为任意类型，<code class="docutils literal notranslate"><span class="pre">coded_value</span></code> 则会转换为字符串。 <a class="reference internal" href="#http.cookies.BaseCookie" title="http.cookies.BaseCookie"><code class="xref py py-class docutils literal notranslate"><span class="pre">BaseCookie</span></code></a> 中的此方法未实现任何编码工作——只为能被子类重写。</p>
<p>通常在 <em>value_decode</em> 的取值范围内，<a class="reference internal" href="#http.cookies.BaseCookie.value_encode" title="http.cookies.BaseCookie.value_encode"><code class="xref py py-meth docutils literal notranslate"><span class="pre">value_encode()</span></code></a> 和 <a class="reference internal" href="#http.cookies.BaseCookie.value_decode" title="http.cookies.BaseCookie.value_decode"><code class="xref py py-meth docutils literal notranslate"><span class="pre">value_decode()</span></code></a> 应为可互逆操作。</p>
</dd></dl>
<dl class="method">
<dt id="http.cookies.BaseCookie.output">
<code class="sig-prename descclassname">BaseCookie.</code><code class="sig-name descname">output</code><span class="sig-paren">(</span><em class="sig-param">attrs=None</em>, <em class="sig-param">header='Set-Cookie:'</em>, <em class="sig-param">sep='\r\n'</em><span class="sig-paren">)</span><a class="headerlink" href="#http.cookies.BaseCookie.output" title="永久链接至目标"></a></dt>
<dd><p>返回可作为 HTTP 标头信息发送的字符串表示。 <em>attrs</em> 和 <em>header</em> 会传给每个 <a class="reference internal" href="#http.cookies.Morsel" title="http.cookies.Morsel"><code class="xref py py-class docutils literal notranslate"><span class="pre">Morsel</span></code></a> 的 <a class="reference internal" href="#http.cookies.BaseCookie.output" title="http.cookies.BaseCookie.output"><code class="xref py py-meth docutils literal notranslate"><span class="pre">output()</span></code></a> 方法。 <em>sep</em> 用来将标头连接在一起，默认为 <code class="docutils literal notranslate"><span class="pre">'\r\n'</span></code> (CRLF) 组合。</p>
</dd></dl>
<dl class="method">
<dt id="http.cookies.BaseCookie.js_output">
<code class="sig-prename descclassname">BaseCookie.</code><code class="sig-name descname">js_output</code><span class="sig-paren">(</span><em class="sig-param">attrs=None</em><span class="sig-paren">)</span><a class="headerlink" href="#http.cookies.BaseCookie.js_output" title="永久链接至目标"></a></dt>
<dd><p>返回一段可供嵌入的 JavaScript 代码，若在支持 JavaScript 的浏览器上运行，其作用如同发送 HTTP 头部信息一样。</p>
<p><em>attrs</em> 的含义与 <a class="reference internal" href="#http.cookies.BaseCookie.output" title="http.cookies.BaseCookie.output"><code class="xref py py-meth docutils literal notranslate"><span class="pre">output()</span></code></a> 的相同。</p>
</dd></dl>
<dl class="method">
<dt id="http.cookies.BaseCookie.load">
<code class="sig-prename descclassname">BaseCookie.</code><code class="sig-name descname">load</code><span class="sig-paren">(</span><em class="sig-param">rawdata</em><span class="sig-paren">)</span><a class="headerlink" href="#http.cookies.BaseCookie.load" title="永久链接至目标"></a></dt>
<dd><p>若 <em>rawdata</em> 为字符串，则会作为 <code class="docutils literal notranslate"><span class="pre">HTTP_COOKIE</span></code> 进行解析，并将找到的值添加为 <a class="reference internal" href="#http.cookies.Morsel" title="http.cookies.Morsel"><code class="xref py py-class docutils literal notranslate"><span class="pre">Morsel</span></code></a>。 如果是字典值，则等价于:</p>
<div class="highlight-python3 notranslate"><div class="highlight"><pre><span></span><span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="n">rawdata</span><span class="o">.</span><span class="n">items</span><span class="p">():</span>
<span class="n">cookie</span><span class="p">[</span><span class="n">k</span><span class="p">]</span> <span class="o">=</span> <span class="n">v</span>
</pre></div>
</div>
</dd></dl>
</section>
<section id="morsel-objects">
<span id="id2"></span><h2>Morsel 对象<a class="headerlink" href="#morsel-objects" title="永久链接至标题"></a></h2>
<dl class="class">
<dt id="http.cookies.Morsel">
<em class="property">class </em><code class="sig-prename descclassname">http.cookies.</code><code class="sig-name descname">Morsel</code><a class="headerlink" href="#http.cookies.Morsel" title="永久链接至目标"></a></dt>
<dd><p>对键/值对的抽象，带有 <span class="target" id="index-20"></span><a class="rfc reference external" href="https://tools.ietf.org/html/rfc2109.html"><strong>RFC 2109</strong></a> 的部分属性。</p>
<p>morsel 对象类似于字典，键的组成是常量——均为有效的 <span class="target" id="index-21"></span><a class="rfc reference external" href="https://tools.ietf.org/html/rfc2109.html"><strong>RFC 2109</strong></a> 属性，包括：</p>
<ul class="simple">
<li><p><code class="docutils literal notranslate"><span class="pre">expires</span></code></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">path</span></code></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">comment</span></code></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">domain</span></code></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">max-age</span></code></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">secure</span></code></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">version</span></code></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">httponly</span></code></p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">samesite</span></code></p></li>
</ul>
<p><code class="xref py py-attr docutils literal notranslate"><span class="pre">httponly</span></code> 属性指明了该 cookie 仅在 HTTP 请求中传输，且不能通过 JavaScript 访问。这是为了减轻某些跨站脚本攻击的危害。</p>
<p><code class="xref py py-attr docutils literal notranslate"><span class="pre">samesite</span></code> 属性指明了浏览器不得与跨站请求一起发送该 cookie。这有助于减轻 CSRF 攻击的危害。此属性的有效值为 “Strict”和“Lax”。</p>
<p>键不区分大小写，默认值为 <code class="docutils literal notranslate"><span class="pre">''</span></code>。</p>
<div class="versionchanged">
<p><span class="versionmodified changed">在 3.5 版更改: </span>现在，<code class="xref py py-meth docutils literal notranslate"><span class="pre">__eq__()</span></code> 会同时考虑 <a class="reference internal" href="#http.cookies.Morsel.key" title="http.cookies.Morsel.key"><code class="xref py py-attr docutils literal notranslate"><span class="pre">key</span></code></a> 和 <a class="reference internal" href="#http.cookies.Morsel.value" title="http.cookies.Morsel.value"><code class="xref py py-attr docutils literal notranslate"><span class="pre">value</span></code></a> 。</p>
</div>
<div class="versionchanged">
<p><span class="versionmodified changed">在 3.7 版更改: </span>Attributes <a class="reference internal" href="#http.cookies.Morsel.key" title="http.cookies.Morsel.key"><code class="xref py py-attr docutils literal notranslate"><span class="pre">key</span></code></a>, <a class="reference internal" href="#http.cookies.Morsel.value" title="http.cookies.Morsel.value"><code class="xref py py-attr docutils literal notranslate"><span class="pre">value</span></code></a> and
<a class="reference internal" href="#http.cookies.Morsel.coded_value" title="http.cookies.Morsel.coded_value"><code class="xref py py-attr docutils literal notranslate"><span class="pre">coded_value</span></code></a> are read-only. Use <a class="reference internal" href="#http.cookies.Morsel.set" title="http.cookies.Morsel.set"><code class="xref py py-meth docutils literal notranslate"><span class="pre">set()</span></code></a> for
setting them.</p>
</div>
<div class="versionchanged">
<p><span class="versionmodified changed">在 3.8 版更改: </span>增加对 <code class="xref py py-attr docutils literal notranslate"><span class="pre">samesite</span></code> 属性的支持。</p>
</div>
</dd></dl>
<dl class="attribute">
<dt id="http.cookies.Morsel.value">
<code class="sig-prename descclassname">Morsel.</code><code class="sig-name descname">value</code><a class="headerlink" href="#http.cookies.Morsel.value" title="永久链接至目标"></a></dt>
<dd><p>Cookie的值。</p>
</dd></dl>
<dl class="attribute">
<dt id="http.cookies.Morsel.coded_value">
<code class="sig-prename descclassname">Morsel.</code><code class="sig-name descname">coded_value</code><a class="headerlink" href="#http.cookies.Morsel.coded_value" title="永久链接至目标"></a></dt>
<dd><p>编码后的 cookie 值——也即要发送的内容。</p>
</dd></dl>
<dl class="attribute">
<dt id="http.cookies.Morsel.key">
<code class="sig-prename descclassname">Morsel.</code><code class="sig-name descname">key</code><a class="headerlink" href="#http.cookies.Morsel.key" title="永久链接至目标"></a></dt>
<dd><p>cookie 名称</p>
</dd></dl>
<dl class="method">
<dt id="http.cookies.Morsel.set">
<code class="sig-prename descclassname">Morsel.</code><code class="sig-name descname">set</code><span class="sig-paren">(</span><em class="sig-param">key</em>, <em class="sig-param">value</em>, <em class="sig-param">coded_value</em><span class="sig-paren">)</span><a class="headerlink" href="#http.cookies.Morsel.set" title="永久链接至目标"></a></dt>
<dd><p>设置 <em>key</em>、<em>value</em> 和 <em>coded_value</em> 属性。</p>
</dd></dl>
<dl class="method">
<dt id="http.cookies.Morsel.isReservedKey">
<code class="sig-prename descclassname">Morsel.</code><code class="sig-name descname">isReservedKey</code><span class="sig-paren">(</span><em class="sig-param">K</em><span class="sig-paren">)</span><a class="headerlink" href="#http.cookies.Morsel.isReservedKey" title="永久链接至目标"></a></dt>
<dd><p><em>K</em> 是否属于 <a class="reference internal" href="#http.cookies.Morsel" title="http.cookies.Morsel"><code class="xref py py-class docutils literal notranslate"><span class="pre">Morsel</span></code></a> 的键。</p>
</dd></dl>
<dl class="method">
<dt id="http.cookies.Morsel.output">
<code class="sig-prename descclassname">Morsel.</code><code class="sig-name descname">output</code><span class="sig-paren">(</span><em class="sig-param">attrs=None</em>, <em class="sig-param">header='Set-Cookie:'</em><span class="sig-paren">)</span><a class="headerlink" href="#http.cookies.Morsel.output" title="永久链接至目标"></a></dt>
<dd><p>返回 morsel 的字符串形式，适用于作为 HTTP 头部信息进行发送。默认包含所有属性，除非给出 <em>attrs</em> 属性列表。<em>header</em> 默认为 <code class="docutils literal notranslate"><span class="pre">&quot;Set-Cookie:&quot;</span></code>。</p>
</dd></dl>
<dl class="method">
<dt id="http.cookies.Morsel.js_output">
<code class="sig-prename descclassname">Morsel.</code><code class="sig-name descname">js_output</code><span class="sig-paren">(</span><em class="sig-param">attrs=None</em><span class="sig-paren">)</span><a class="headerlink" href="#http.cookies.Morsel.js_output" title="永久链接至目标"></a></dt>
<dd><p>返回一段可供嵌入的 JavaScript 代码，若在支持 JavaScript 的浏览器上运行，其作用如同发送 HTTP 头部信息一样。</p>
<p><em>attrs</em> 的含义与 <a class="reference internal" href="#http.cookies.Morsel.output" title="http.cookies.Morsel.output"><code class="xref py py-meth docutils literal notranslate"><span class="pre">output()</span></code></a> 的相同。</p>
</dd></dl>
<dl class="method">
<dt id="http.cookies.Morsel.OutputString">
<code class="sig-prename descclassname">Morsel.</code><code class="sig-name descname">OutputString</code><span class="sig-paren">(</span><em class="sig-param">attrs=None</em><span class="sig-paren">)</span><a class="headerlink" href="#http.cookies.Morsel.OutputString" title="永久链接至目标"></a></dt>
<dd><p>返回 morsel 的字符串形式，不含 HTTP 或 JavaScript 数据。</p>
<p><em>attrs</em> 的含义与 <a class="reference internal" href="#http.cookies.Morsel.output" title="http.cookies.Morsel.output"><code class="xref py py-meth docutils literal notranslate"><span class="pre">output()</span></code></a> 的相同。</p>
</dd></dl>
<dl class="method">
<dt id="http.cookies.Morsel.update">
<code class="sig-prename descclassname">Morsel.</code><code class="sig-name descname">update</code><span class="sig-paren">(</span><em class="sig-param">values</em><span class="sig-paren">)</span><a class="headerlink" href="#http.cookies.Morsel.update" title="永久链接至目标"></a></dt>
<dd><p>用字典 <em>values</em> 中的值更新 morsel 字典中的值。若有 <em>values</em> 字典中的键不是有效的 <span class="target" id="index-22"></span><a class="rfc reference external" href="https://tools.ietf.org/html/rfc2109.html"><strong>RFC 2109</strong></a> 属性，则会触发错误。</p>
<div class="versionchanged">
<p><span class="versionmodified changed">在 3.5 版更改: </span>无效键会触发错误。</p>
</div>
</dd></dl>
<dl class="method">
<dt id="http.cookies.Morsel.copy">
<code class="sig-prename descclassname">Morsel.</code><code class="sig-name descname">copy</code><span class="sig-paren">(</span><em class="sig-param">value</em><span class="sig-paren">)</span><a class="headerlink" href="#http.cookies.Morsel.copy" title="永久链接至目标"></a></dt>
<dd><p>返回 morsel 对象的浅表复制副本。</p>
<div class="versionchanged">
<p><span class="versionmodified changed">在 3.5 版更改: </span>返回一个 morsel 对象，而非字典。</p>
</div>
</dd></dl>
<dl class="method">
<dt id="http.cookies.Morsel.setdefault">
<code class="sig-prename descclassname">Morsel.</code><code class="sig-name descname">setdefault</code><span class="sig-paren">(</span><em class="sig-param">key</em>, <em class="sig-param">value=None</em><span class="sig-paren">)</span><a class="headerlink" href="#http.cookies.Morsel.setdefault" title="永久链接至目标"></a></dt>
<dd><p>若 key 不是有效的 <span class="target" id="index-23"></span><a class="rfc reference external" href="https://tools.ietf.org/html/rfc2109.html"><strong>RFC 2109</strong></a> 属性则触发错误，否则与 <a class="reference internal" href="stdtypes.html#dict.setdefault" title="dict.setdefault"><code class="xref py py-meth docutils literal notranslate"><span class="pre">dict.setdefault()</span></code></a> 相同。</p>
</dd></dl>
</section>
<section id="example">
<span id="cookie-example"></span><h2>示例<a class="headerlink" href="#example" title="永久链接至标题"></a></h2>
<p>以下例子演示了 <a class="reference internal" href="#module-http.cookies" title="http.cookies: Support for HTTP state management (cookies)."><code class="xref py py-mod docutils literal notranslate"><span class="pre">http.cookies</span></code></a> 模块的用法。</p>
<div class="highlight-pycon3 notranslate"><div class="highlight"><pre><span></span><span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">http</span> <span class="kn">import</span> <span class="n">cookies</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">C</span> <span class="o">=</span> <span class="n">cookies</span><span class="o">.</span><span class="n">SimpleCookie</span><span class="p">()</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">C</span><span class="p">[</span><span class="s2">&quot;fig&quot;</span><span class="p">]</span> <span class="o">=</span> <span class="s2">&quot;newton&quot;</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">C</span><span class="p">[</span><span class="s2">&quot;sugar&quot;</span><span class="p">]</span> <span class="o">=</span> <span class="s2">&quot;wafer&quot;</span>
<span class="gp">&gt;&gt;&gt; </span><span class="nb">print</span><span class="p">(</span><span class="n">C</span><span class="p">)</span> <span class="c1"># generate HTTP headers</span>
<span class="go">Set-Cookie: fig=newton</span>
<span class="go">Set-Cookie: sugar=wafer</span>
<span class="gp">&gt;&gt;&gt; </span><span class="nb">print</span><span class="p">(</span><span class="n">C</span><span class="o">.</span><span class="n">output</span><span class="p">())</span> <span class="c1"># same thing</span>
<span class="go">Set-Cookie: fig=newton</span>
<span class="go">Set-Cookie: sugar=wafer</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">C</span> <span class="o">=</span> <span class="n">cookies</span><span class="o">.</span><span class="n">SimpleCookie</span><span class="p">()</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">C</span><span class="p">[</span><span class="s2">&quot;rocky&quot;</span><span class="p">]</span> <span class="o">=</span> <span class="s2">&quot;road&quot;</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">C</span><span class="p">[</span><span class="s2">&quot;rocky&quot;</span><span class="p">][</span><span class="s2">&quot;path&quot;</span><span class="p">]</span> <span class="o">=</span> <span class="s2">&quot;/cookie&quot;</span>
<span class="gp">&gt;&gt;&gt; </span><span class="nb">print</span><span class="p">(</span><span class="n">C</span><span class="o">.</span><span class="n">output</span><span class="p">(</span><span class="n">header</span><span class="o">=</span><span class="s2">&quot;Cookie:&quot;</span><span class="p">))</span>
<span class="go">Cookie: rocky=road; Path=/cookie</span>
<span class="gp">&gt;&gt;&gt; </span><span class="nb">print</span><span class="p">(</span><span class="n">C</span><span class="o">.</span><span class="n">output</span><span class="p">(</span><span class="n">attrs</span><span class="o">=</span><span class="p">[],</span> <span class="n">header</span><span class="o">=</span><span class="s2">&quot;Cookie:&quot;</span><span class="p">))</span>
<span class="go">Cookie: rocky=road</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">C</span> <span class="o">=</span> <span class="n">cookies</span><span class="o">.</span><span class="n">SimpleCookie</span><span class="p">()</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">C</span><span class="o">.</span><span class="n">load</span><span class="p">(</span><span class="s2">&quot;chips=ahoy; vienna=finger&quot;</span><span class="p">)</span> <span class="c1"># load from a string (HTTP header)</span>
<span class="gp">&gt;&gt;&gt; </span><span class="nb">print</span><span class="p">(</span><span class="n">C</span><span class="p">)</span>
<span class="go">Set-Cookie: chips=ahoy</span>
<span class="go">Set-Cookie: vienna=finger</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">C</span> <span class="o">=</span> <span class="n">cookies</span><span class="o">.</span><span class="n">SimpleCookie</span><span class="p">()</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">C</span><span class="o">.</span><span class="n">load</span><span class="p">(</span><span class="s1">&#39;keebler=&quot;E=everybody; L=</span><span class="se">\\</span><span class="s1">&quot;Loves</span><span class="se">\\</span><span class="s1">&quot;; fudge=</span><span class="se">\\</span><span class="s1">012;&quot;;&#39;</span><span class="p">)</span>
<span class="gp">&gt;&gt;&gt; </span><span class="nb">print</span><span class="p">(</span><span class="n">C</span><span class="p">)</span>
<span class="go">Set-Cookie: keebler=&quot;E=everybody; L=\&quot;Loves\&quot;; fudge=\012;&quot;</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">C</span> <span class="o">=</span> <span class="n">cookies</span><span class="o">.</span><span class="n">SimpleCookie</span><span class="p">()</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">C</span><span class="p">[</span><span class="s2">&quot;oreo&quot;</span><span class="p">]</span> <span class="o">=</span> <span class="s2">&quot;doublestuff&quot;</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">C</span><span class="p">[</span><span class="s2">&quot;oreo&quot;</span><span class="p">][</span><span class="s2">&quot;path&quot;</span><span class="p">]</span> <span class="o">=</span> <span class="s2">&quot;/&quot;</span>
<span class="gp">&gt;&gt;&gt; </span><span class="nb">print</span><span class="p">(</span><span class="n">C</span><span class="p">)</span>
<span class="go">Set-Cookie: oreo=doublestuff; Path=/</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">C</span> <span class="o">=</span> <span class="n">cookies</span><span class="o">.</span><span class="n">SimpleCookie</span><span class="p">()</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">C</span><span class="p">[</span><span class="s2">&quot;twix&quot;</span><span class="p">]</span> <span class="o">=</span> <span class="s2">&quot;none for you&quot;</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">C</span><span class="p">[</span><span class="s2">&quot;twix&quot;</span><span class="p">]</span><span class="o">.</span><span class="n">value</span>
<span class="go">&#39;none for you&#39;</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">C</span> <span class="o">=</span> <span class="n">cookies</span><span class="o">.</span><span class="n">SimpleCookie</span><span class="p">()</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">C</span><span class="p">[</span><span class="s2">&quot;number&quot;</span><span class="p">]</span> <span class="o">=</span> <span class="mi">7</span> <span class="c1"># equivalent to C[&quot;number&quot;] = str(7)</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">C</span><span class="p">[</span><span class="s2">&quot;string&quot;</span><span class="p">]</span> <span class="o">=</span> <span class="s2">&quot;seven&quot;</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">C</span><span class="p">[</span><span class="s2">&quot;number&quot;</span><span class="p">]</span><span class="o">.</span><span class="n">value</span>
<span class="go">&#39;7&#39;</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">C</span><span class="p">[</span><span class="s2">&quot;string&quot;</span><span class="p">]</span><span class="o">.</span><span class="n">value</span>
<span class="go">&#39;seven&#39;</span>
<span class="gp">&gt;&gt;&gt; </span><span class="nb">print</span><span class="p">(</span><span class="n">C</span><span class="p">)</span>
<span class="go">Set-Cookie: number=7</span>
<span class="go">Set-Cookie: string=seven</span>
</pre></div>
</div>
</section>
</section>
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<li><a class="reference internal" href="#"><code class="xref py py-mod docutils literal notranslate"><span class="pre">http.cookies</span></code> --- HTTP状态管理</a><ul>
<li><a class="reference internal" href="#cookie-objects">Cookie 对象</a></li>
<li><a class="reference internal" href="#morsel-objects">Morsel 对象</a></li>
<li><a class="reference internal" href="#example">示例</a></li>
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