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<h1>消息更新处理器<a class="headerlink" href="#id1" title="永久链接至标题">¶</a></h1>
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<p>Handlers 用于告诉 Telethon 处理哪种类型的消息更新。</p>
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<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="kn">from</span> <span class="nn">telethon.sync</span> <span class="kn">import</span> <span class="n">TelegramClient</span><span class="p">,</span> <span class="n">events</span>
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<span class="n">app</span> <span class="o">=</span> <span class="n">Client</span><span class="p">(</span><span class="s2">"my_account"</span><span class="p">,</span> <span class="n">api_id</span><span class="p">,</span> <span class="n">api_hash</span><span class="p">)</span>
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<span class="k">async</span> <span class="k">def</span> <span class="nf">handler</span><span class="p">(</span><span class="n">context</span><span class="p">):</span>
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<span class="nb">print</span><span class="p">(</span><span class="n">context</span><span class="o">.</span><span class="n">text</span><span class="p">)</span>
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<span class="hll"><span class="n">app</span><span class="o">.</span><span class="n">add_event_handler</span><span class="p">(</span><span class="n">handler</span><span class="p">,</span> <span class="n">events</span><span class="o">.</span><span class="n">NewMessage</span><span class="p">(</span><span class="o">**</span><span class="n">args</span><span class="p">))</span>
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</span>
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<span class="hll"><span class="n">app</span><span class="o">.</span><span class="n">run_until_disconnected</span><span class="p">()</span>
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</span></pre></div>
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<p class="topic-title">目录</p>
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<ul class="simple">
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<li><p><a class="reference internal" href="#id3" id="id5">索引</a></p></li>
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<li><p><a class="reference internal" href="#id4" id="id6">详细信息</a></p></li>
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<div class="section" id="id3">
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<h2>索引<a class="headerlink" href="#id3" title="永久链接至标题">¶</a></h2>
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<table class="hlist"><tr><td><ul class="simple">
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<li><p><a class="reference internal" href="#telethon.events.NewMessage" title="telethon.events.NewMessage"><code class="xref py py-class docutils literal notranslate"><span class="pre">NewMessage</span></code></a></p></li>
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</td><td><ul class="simple">
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</ul>
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</td><td><ul class="simple">
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<div class="section" id="id4">
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<h2>详细信息<a class="headerlink" href="#id4" title="永久链接至标题">¶</a></h2>
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<dl class="py class">
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<dt id="telethon.events.NewMessage">
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<em class="property"><span class="pre">class</span> </em><code class="sig-prename descclassname"><span class="pre">telethon.events.</span></code><code class="sig-name descname"><span class="pre">NewMessage</span></code><a class="headerlink" href="#telethon.events.NewMessage" title="永久链接至目标">¶</a></dt>
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<dd><p><code class="docutils literal notranslate"><span class="pre">chats=None,</span> <span class="pre">incoming=None,</span> <span class="pre">outgoing=None,</span> <span class="pre">from_users=None,</span> <span class="pre">forwards=None,</span> <span class="pre">pattern=None</span></code></p>
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<p>消息处理程序类。用于处理来自任何对话（私聊、群组、频道）的文本，媒体消息。
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它需要与 <code class="xref py py-meth docutils literal notranslate"><span class="pre">add_handler()</span></code> 一起使用。</p>
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<dl>
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<dt>参数：</dt><dd><dl class="simple">
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<dt>incoming (<code class="docutils literal notranslate"><span class="pre">bool</span></code>，<code class="docutils literal notranslate"><span class="pre">可选</span></code>):</dt><dd><p>如果设置为 <code class="docutils literal notranslate"><span class="pre">True</span></code> ，则只能处理接收到的消息。与 <code class="docutils literal notranslate"><span class="pre">outgoing</span></code> 相互排斥（只能设置一个 <code class="docutils literal notranslate"><span class="pre">False</span></code>）。</p>
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</dd>
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<dt>outgoing (<code class="docutils literal notranslate"><span class="pre">bool</span></code>，<code class="docutils literal notranslate"><span class="pre">可选</span></code>):</dt><dd><p>如果设置为 <code class="docutils literal notranslate"><span class="pre">True</span></code> ，则只能处理此账户通过其他客户端发出的消息。与 <code class="docutils literal notranslate"><span class="pre">incoming</span></code> 相互排斥（只能设置一个 <code class="docutils literal notranslate"><span class="pre">False</span></code>）。</p>
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</dd>
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<dt>from_users (<code class="xref py py-obj docutils literal notranslate"><span class="pre">User</span></code>，<code class="docutils literal notranslate"><span class="pre">可选</span></code>):</dt><dd><p>不像 <code class="docutils literal notranslate"><span class="pre">chats</span></code> 参数，此项会筛选出来自此/这些用户的所有消息。如果您只想筛选出来自此/这些用户的私聊对话，请使用 <code class="docutils literal notranslate"><span class="pre">chats</span></code> 参数。</p>
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</dd>
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<dt>forwards (<code class="docutils literal notranslate"><span class="pre">bool</span></code>，<code class="docutils literal notranslate"><span class="pre">可选</span></code>):</dt><dd><p>是否处理转发消息。默认情况下，将处理转发和普通消息。如果设置为 <code class="docutils literal notranslate"><span class="pre">True</span></code>，则只处理转发消息；如果设置为 <code class="docutils literal notranslate"><span class="pre">False</span></code>，则只处理普通消息。</p>
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</dd>
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<dt>pattern (<code class="docutils literal notranslate"><span class="pre">str</span></code>,``callable``,``Pattern``，<code class="docutils literal notranslate"><span class="pre">可选</span></code>):</dt><dd><p>如果设置，只有匹配此模式的消息将被处理。您可以指定 Regex 字符串或者编译的正则表达式模式，如果与消息匹配则将被处理；
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如果是可调函数，返回值为 <code class="docutils literal notranslate"><span class="pre">True</span></code> 时消息将被处理。</p>
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</dd>
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</dl>
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</dd>
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<dt>Example</dt><dd><div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="kn">import</span> <span class="nn">asyncio</span>
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<span class="kn">from</span> <span class="nn">telethon</span> <span class="kn">import</span> <span class="n">events</span>
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<span class="nd">@client</span><span class="o">.</span><span class="n">on</span><span class="p">(</span><span class="n">events</span><span class="o">.</span><span class="n">NewMessage</span><span class="p">(</span><span class="n">pattern</span><span class="o">=</span><span class="s1">'(?i)hello.+'</span><span class="p">))</span>
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<span class="k">async</span> <span class="k">def</span> <span class="nf">handler</span><span class="p">(</span><span class="n">event</span><span class="p">):</span>
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<span class="c1"># Respond whenever someone says "Hello" and something else</span>
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<span class="k">await</span> <span class="n">event</span><span class="o">.</span><span class="n">reply</span><span class="p">(</span><span class="s1">'Hey!'</span><span class="p">)</span>
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<span class="nd">@client</span><span class="o">.</span><span class="n">on</span><span class="p">(</span><span class="n">events</span><span class="o">.</span><span class="n">NewMessage</span><span class="p">(</span><span class="n">outgoing</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> <span class="n">pattern</span><span class="o">=</span><span class="s1">'!ping'</span><span class="p">))</span>
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<span class="k">async</span> <span class="k">def</span> <span class="nf">handler</span><span class="p">(</span><span class="n">event</span><span class="p">):</span>
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<span class="c1"># Say "!pong" whenever you send "!ping", then delete both messages</span>
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<span class="n">m</span> <span class="o">=</span> <span class="k">await</span> <span class="n">event</span><span class="o">.</span><span class="n">respond</span><span class="p">(</span><span class="s1">'!pong'</span><span class="p">)</span>
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<span class="k">await</span> <span class="n">asyncio</span><span class="o">.</span><span class="n">sleep</span><span class="p">(</span><span class="mi">5</span><span class="p">)</span>
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<span class="k">await</span> <span class="n">client</span><span class="o">.</span><span class="n">delete_messages</span><span class="p">(</span><span class="n">event</span><span class="o">.</span><span class="n">chat_id</span><span class="p">,</span> <span class="p">[</span><span class="n">event</span><span class="o">.</span><span class="n">id</span><span class="p">,</span> <span class="n">m</span><span class="o">.</span><span class="n">id</span><span class="p">])</span>
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</pre></div>
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