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<li class="nav-item nav-item-3"><a href="email.html" accesskey="U"><code class="xref py py-mod docutils literal notranslate"><span class="pre">email</span></code> --- 电子邮件与 MIME 处理包</a> »</li>
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<section id="email-examples">
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<span id="id1"></span><h1><a class="reference internal" href="email.html#module-email" title="email: Package supporting the parsing, manipulating, and generating email messages."><code class="xref py py-mod docutils literal notranslate"><span class="pre">email</span></code></a>: 示例<a class="headerlink" href="#email-examples" title="永久链接至标题">¶</a></h1>
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<p>以下是一些如何使用 <a class="reference internal" href="email.html#module-email" title="email: Package supporting the parsing, manipulating, and generating email messages."><code class="xref py py-mod docutils literal notranslate"><span class="pre">email</span></code></a> 包来读取、写入和发送简单电子邮件以及更复杂的MIME邮件的示例。</p>
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<p>首先，让我们看看如何创建和发送简单的文本消息（文本内容和地址都可能包含unicode字符）：</p>
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<div class="highlight-python3 notranslate"><div class="highlight"><pre><span></span><span class="c1"># Import smtplib for the actual sending function</span>
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<span class="kn">import</span> <span class="nn">smtplib</span>
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<span class="c1"># Import the email modules we'll need</span>
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<span class="kn">from</span> <span class="nn">email.message</span> <span class="kn">import</span> <span class="n">EmailMessage</span>
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<span class="c1"># Open the plain text file whose name is in textfile for reading.</span>
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<span class="k">with</span> <span class="nb">open</span><span class="p">(</span><span class="n">textfile</span><span class="p">)</span> <span class="k">as</span> <span class="n">fp</span><span class="p">:</span>
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<span class="c1"># Create a text/plain message</span>
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<span class="n">msg</span> <span class="o">=</span> <span class="n">EmailMessage</span><span class="p">()</span>
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<span class="n">msg</span><span class="o">.</span><span class="n">set_content</span><span class="p">(</span><span class="n">fp</span><span class="o">.</span><span class="n">read</span><span class="p">())</span>
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<span class="c1"># me == the sender's email address</span>
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<span class="c1"># you == the recipient's email address</span>
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<span class="n">msg</span><span class="p">[</span><span class="s1">'Subject'</span><span class="p">]</span> <span class="o">=</span> <span class="sa">f</span><span class="s1">'The contents of </span><span class="si">{</span><span class="n">textfile</span><span class="si">}</span><span class="s1">'</span>
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<span class="n">msg</span><span class="p">[</span><span class="s1">'From'</span><span class="p">]</span> <span class="o">=</span> <span class="n">me</span>
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<span class="n">msg</span><span class="p">[</span><span class="s1">'To'</span><span class="p">]</span> <span class="o">=</span> <span class="n">you</span>
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<span class="c1"># Send the message via our own SMTP server.</span>
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<span class="n">s</span> <span class="o">=</span> <span class="n">smtplib</span><span class="o">.</span><span class="n">SMTP</span><span class="p">(</span><span class="s1">'localhost'</span><span class="p">)</span>
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<span class="n">s</span><span class="o">.</span><span class="n">send_message</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span>
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<span class="n">s</span><span class="o">.</span><span class="n">quit</span><span class="p">()</span>
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</pre></div>
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</div>
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<p>解析 <span class="target" id="index-2"></span><a class="rfc reference external" href="https://tools.ietf.org/html/rfc822.html"><strong>RFC 822</strong></a> 标题可以通过使用 <a class="reference internal" href="email.parser.html#module-email.parser" title="email.parser: Parse flat text email messages to produce a message object structure."><code class="xref py py-mod docutils literal notranslate"><span class="pre">parser</span></code></a> 模块中的类来轻松完成：</p>
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<div class="highlight-python3 notranslate"><div class="highlight"><pre><span></span><span class="c1"># Import the email modules we'll need</span>
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<span class="kn">from</span> <span class="nn">email.parser</span> <span class="kn">import</span> <span class="n">BytesParser</span><span class="p">,</span> <span class="n">Parser</span>
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<span class="kn">from</span> <span class="nn">email.policy</span> <span class="kn">import</span> <span class="n">default</span>
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<span class="c1"># If the e-mail headers are in a file, uncomment these two lines:</span>
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<span class="c1"># with open(messagefile, 'rb') as fp:</span>
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<span class="c1"># headers = BytesParser(policy=default).parse(fp)</span>
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<span class="c1"># Or for parsing headers in a string (this is an uncommon operation), use:</span>
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<span class="n">headers</span> <span class="o">=</span> <span class="n">Parser</span><span class="p">(</span><span class="n">policy</span><span class="o">=</span><span class="n">default</span><span class="p">)</span><span class="o">.</span><span class="n">parsestr</span><span class="p">(</span>
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<span class="s1">'From: Foo Bar <user@example.com></span><span class="se">\n</span><span class="s1">'</span>
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<span class="s1">'To: <someone_else@example.com></span><span class="se">\n</span><span class="s1">'</span>
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<span class="s1">'Subject: Test message</span><span class="se">\n</span><span class="s1">'</span>
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<span class="s1">'</span><span class="se">\n</span><span class="s1">'</span>
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<span class="s1">'Body would go here</span><span class="se">\n</span><span class="s1">'</span><span class="p">)</span>
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<span class="c1"># Now the header items can be accessed as a dictionary:</span>
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<span class="nb">print</span><span class="p">(</span><span class="s1">'To: </span><span class="si">{}</span><span class="s1">'</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">headers</span><span class="p">[</span><span class="s1">'to'</span><span class="p">]))</span>
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<span class="nb">print</span><span class="p">(</span><span class="s1">'From: </span><span class="si">{}</span><span class="s1">'</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">headers</span><span class="p">[</span><span class="s1">'from'</span><span class="p">]))</span>
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<span class="nb">print</span><span class="p">(</span><span class="s1">'Subject: </span><span class="si">{}</span><span class="s1">'</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">headers</span><span class="p">[</span><span class="s1">'subject'</span><span class="p">]))</span>
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<span class="c1"># You can also access the parts of the addresses:</span>
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<span class="nb">print</span><span class="p">(</span><span class="s1">'Recipient username: </span><span class="si">{}</span><span class="s1">'</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">headers</span><span class="p">[</span><span class="s1">'to'</span><span class="p">]</span><span class="o">.</span><span class="n">addresses</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">username</span><span class="p">))</span>
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<span class="nb">print</span><span class="p">(</span><span class="s1">'Sender name: </span><span class="si">{}</span><span class="s1">'</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">headers</span><span class="p">[</span><span class="s1">'from'</span><span class="p">]</span><span class="o">.</span><span class="n">addresses</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">display_name</span><span class="p">))</span>
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</pre></div>
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</div>
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<p>以下是如何发送包含可能在目录中的一系列家庭照片的MIME消息示例：</p>
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<div class="highlight-python3 notranslate"><div class="highlight"><pre><span></span><span class="c1"># Import smtplib for the actual sending function</span>
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<span class="kn">import</span> <span class="nn">smtplib</span>
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<span class="c1"># And imghdr to find the types of our images</span>
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<span class="kn">import</span> <span class="nn">imghdr</span>
|
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<span class="c1"># Here are the email package modules we'll need</span>
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<span class="kn">from</span> <span class="nn">email.message</span> <span class="kn">import</span> <span class="n">EmailMessage</span>
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<span class="c1"># Create the container email message.</span>
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<span class="n">msg</span> <span class="o">=</span> <span class="n">EmailMessage</span><span class="p">()</span>
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<span class="n">msg</span><span class="p">[</span><span class="s1">'Subject'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'Our family reunion'</span>
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<span class="c1"># me == the sender's email address</span>
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<span class="c1"># family = the list of all recipients' email addresses</span>
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<span class="n">msg</span><span class="p">[</span><span class="s1">'From'</span><span class="p">]</span> <span class="o">=</span> <span class="n">me</span>
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<span class="n">msg</span><span class="p">[</span><span class="s1">'To'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">', '</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">family</span><span class="p">)</span>
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<span class="n">msg</span><span class="o">.</span><span class="n">preamble</span> <span class="o">=</span> <span class="s1">'You will not see this in a MIME-aware mail reader.</span><span class="se">\n</span><span class="s1">'</span>
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<span class="c1"># Open the files in binary mode. Use imghdr to figure out the</span>
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<span class="c1"># MIME subtype for each specific image.</span>
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<span class="k">for</span> <span class="n">file</span> <span class="ow">in</span> <span class="n">pngfiles</span><span class="p">:</span>
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<span class="k">with</span> <span class="nb">open</span><span class="p">(</span><span class="n">file</span><span class="p">,</span> <span class="s1">'rb'</span><span class="p">)</span> <span class="k">as</span> <span class="n">fp</span><span class="p">:</span>
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<span class="n">img_data</span> <span class="o">=</span> <span class="n">fp</span><span class="o">.</span><span class="n">read</span><span class="p">()</span>
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<span class="n">msg</span><span class="o">.</span><span class="n">add_attachment</span><span class="p">(</span><span class="n">img_data</span><span class="p">,</span> <span class="n">maintype</span><span class="o">=</span><span class="s1">'image'</span><span class="p">,</span>
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<span class="n">subtype</span><span class="o">=</span><span class="n">imghdr</span><span class="o">.</span><span class="n">what</span><span class="p">(</span><span class="kc">None</span><span class="p">,</span> <span class="n">img_data</span><span class="p">))</span>
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<span class="c1"># Send the email via our own SMTP server.</span>
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<span class="k">with</span> <span class="n">smtplib</span><span class="o">.</span><span class="n">SMTP</span><span class="p">(</span><span class="s1">'localhost'</span><span class="p">)</span> <span class="k">as</span> <span class="n">s</span><span class="p">:</span>
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<span class="n">s</span><span class="o">.</span><span class="n">send_message</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span>
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</pre></div>
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</div>
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<p>以下是如何将目录的全部内容作为电子邮件消息发送的示例： <a class="footnote-reference brackets" href="#id3" id="id2">1</a></p>
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<div class="highlight-python3 notranslate"><div class="highlight"><pre><span></span><span class="ch">#!/usr/bin/env python3</span>
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<span class="sd">"""Send the contents of a directory as a MIME message."""</span>
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<span class="kn">import</span> <span class="nn">os</span>
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<span class="kn">import</span> <span class="nn">smtplib</span>
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<span class="c1"># For guessing MIME type based on file name extension</span>
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||
<span class="kn">import</span> <span class="nn">mimetypes</span>
|
||
|
||
<span class="kn">from</span> <span class="nn">argparse</span> <span class="kn">import</span> <span class="n">ArgumentParser</span>
|
||
|
||
<span class="kn">from</span> <span class="nn">email.message</span> <span class="kn">import</span> <span class="n">EmailMessage</span>
|
||
<span class="kn">from</span> <span class="nn">email.policy</span> <span class="kn">import</span> <span class="n">SMTP</span>
|
||
|
||
|
||
<span class="k">def</span> <span class="nf">main</span><span class="p">():</span>
|
||
<span class="n">parser</span> <span class="o">=</span> <span class="n">ArgumentParser</span><span class="p">(</span><span class="n">description</span><span class="o">=</span><span class="s2">"""</span><span class="se">\</span>
|
||
<span class="s2">Send the contents of a directory as a MIME message.</span>
|
||
<span class="s2">Unless the -o option is given, the email is sent by forwarding to your local</span>
|
||
<span class="s2">SMTP server, which then does the normal delivery process. Your local machine</span>
|
||
<span class="s2">must be running an SMTP server.</span>
|
||
<span class="s2">"""</span><span class="p">)</span>
|
||
<span class="n">parser</span><span class="o">.</span><span class="n">add_argument</span><span class="p">(</span><span class="s1">'-d'</span><span class="p">,</span> <span class="s1">'--directory'</span><span class="p">,</span>
|
||
<span class="n">help</span><span class="o">=</span><span class="s2">"""Mail the contents of the specified directory,</span>
|
||
<span class="s2"> otherwise use the current directory. Only the regular</span>
|
||
<span class="s2"> files in the directory are sent, and we don't recurse to</span>
|
||
<span class="s2"> subdirectories."""</span><span class="p">)</span>
|
||
<span class="n">parser</span><span class="o">.</span><span class="n">add_argument</span><span class="p">(</span><span class="s1">'-o'</span><span class="p">,</span> <span class="s1">'--output'</span><span class="p">,</span>
|
||
<span class="n">metavar</span><span class="o">=</span><span class="s1">'FILE'</span><span class="p">,</span>
|
||
<span class="n">help</span><span class="o">=</span><span class="s2">"""Print the composed message to FILE instead of</span>
|
||
<span class="s2"> sending the message to the SMTP server."""</span><span class="p">)</span>
|
||
<span class="n">parser</span><span class="o">.</span><span class="n">add_argument</span><span class="p">(</span><span class="s1">'-s'</span><span class="p">,</span> <span class="s1">'--sender'</span><span class="p">,</span> <span class="n">required</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span>
|
||
<span class="n">help</span><span class="o">=</span><span class="s1">'The value of the From: header (required)'</span><span class="p">)</span>
|
||
<span class="n">parser</span><span class="o">.</span><span class="n">add_argument</span><span class="p">(</span><span class="s1">'-r'</span><span class="p">,</span> <span class="s1">'--recipient'</span><span class="p">,</span> <span class="n">required</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span>
|
||
<span class="n">action</span><span class="o">=</span><span class="s1">'append'</span><span class="p">,</span> <span class="n">metavar</span><span class="o">=</span><span class="s1">'RECIPIENT'</span><span class="p">,</span>
|
||
<span class="n">default</span><span class="o">=</span><span class="p">[],</span> <span class="n">dest</span><span class="o">=</span><span class="s1">'recipients'</span><span class="p">,</span>
|
||
<span class="n">help</span><span class="o">=</span><span class="s1">'A To: header value (at least one required)'</span><span class="p">)</span>
|
||
<span class="n">args</span> <span class="o">=</span> <span class="n">parser</span><span class="o">.</span><span class="n">parse_args</span><span class="p">()</span>
|
||
<span class="n">directory</span> <span class="o">=</span> <span class="n">args</span><span class="o">.</span><span class="n">directory</span>
|
||
<span class="k">if</span> <span class="ow">not</span> <span class="n">directory</span><span class="p">:</span>
|
||
<span class="n">directory</span> <span class="o">=</span> <span class="s1">'.'</span>
|
||
<span class="c1"># Create the message</span>
|
||
<span class="n">msg</span> <span class="o">=</span> <span class="n">EmailMessage</span><span class="p">()</span>
|
||
<span class="n">msg</span><span class="p">[</span><span class="s1">'Subject'</span><span class="p">]</span> <span class="o">=</span> <span class="sa">f</span><span class="s1">'Contents of directory </span><span class="si">{</span><span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">abspath</span><span class="p">(</span><span class="n">directory</span><span class="p">)</span><span class="si">}</span><span class="s1">'</span>
|
||
<span class="n">msg</span><span class="p">[</span><span class="s1">'To'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">', '</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">args</span><span class="o">.</span><span class="n">recipients</span><span class="p">)</span>
|
||
<span class="n">msg</span><span class="p">[</span><span class="s1">'From'</span><span class="p">]</span> <span class="o">=</span> <span class="n">args</span><span class="o">.</span><span class="n">sender</span>
|
||
<span class="n">msg</span><span class="o">.</span><span class="n">preamble</span> <span class="o">=</span> <span class="s1">'You will not see this in a MIME-aware mail reader.</span><span class="se">\n</span><span class="s1">'</span>
|
||
|
||
<span class="k">for</span> <span class="n">filename</span> <span class="ow">in</span> <span class="n">os</span><span class="o">.</span><span class="n">listdir</span><span class="p">(</span><span class="n">directory</span><span class="p">):</span>
|
||
<span class="n">path</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">directory</span><span class="p">,</span> <span class="n">filename</span><span class="p">)</span>
|
||
<span class="k">if</span> <span class="ow">not</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">isfile</span><span class="p">(</span><span class="n">path</span><span class="p">):</span>
|
||
<span class="k">continue</span>
|
||
<span class="c1"># Guess the content type based on the file's extension. Encoding</span>
|
||
<span class="c1"># will be ignored, although we should check for simple things like</span>
|
||
<span class="c1"># gzip'd or compressed files.</span>
|
||
<span class="n">ctype</span><span class="p">,</span> <span class="n">encoding</span> <span class="o">=</span> <span class="n">mimetypes</span><span class="o">.</span><span class="n">guess_type</span><span class="p">(</span><span class="n">path</span><span class="p">)</span>
|
||
<span class="k">if</span> <span class="n">ctype</span> <span class="ow">is</span> <span class="kc">None</span> <span class="ow">or</span> <span class="n">encoding</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
|
||
<span class="c1"># No guess could be made, or the file is encoded (compressed), so</span>
|
||
<span class="c1"># use a generic bag-of-bits type.</span>
|
||
<span class="n">ctype</span> <span class="o">=</span> <span class="s1">'application/octet-stream'</span>
|
||
<span class="n">maintype</span><span class="p">,</span> <span class="n">subtype</span> <span class="o">=</span> <span class="n">ctype</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s1">'/'</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
|
||
<span class="k">with</span> <span class="nb">open</span><span class="p">(</span><span class="n">path</span><span class="p">,</span> <span class="s1">'rb'</span><span class="p">)</span> <span class="k">as</span> <span class="n">fp</span><span class="p">:</span>
|
||
<span class="n">msg</span><span class="o">.</span><span class="n">add_attachment</span><span class="p">(</span><span class="n">fp</span><span class="o">.</span><span class="n">read</span><span class="p">(),</span>
|
||
<span class="n">maintype</span><span class="o">=</span><span class="n">maintype</span><span class="p">,</span>
|
||
<span class="n">subtype</span><span class="o">=</span><span class="n">subtype</span><span class="p">,</span>
|
||
<span class="n">filename</span><span class="o">=</span><span class="n">filename</span><span class="p">)</span>
|
||
<span class="c1"># Now send or store the message</span>
|
||
<span class="k">if</span> <span class="n">args</span><span class="o">.</span><span class="n">output</span><span class="p">:</span>
|
||
<span class="k">with</span> <span class="nb">open</span><span class="p">(</span><span class="n">args</span><span class="o">.</span><span class="n">output</span><span class="p">,</span> <span class="s1">'wb'</span><span class="p">)</span> <span class="k">as</span> <span class="n">fp</span><span class="p">:</span>
|
||
<span class="n">fp</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="n">msg</span><span class="o">.</span><span class="n">as_bytes</span><span class="p">(</span><span class="n">policy</span><span class="o">=</span><span class="n">SMTP</span><span class="p">))</span>
|
||
<span class="k">else</span><span class="p">:</span>
|
||
<span class="k">with</span> <span class="n">smtplib</span><span class="o">.</span><span class="n">SMTP</span><span class="p">(</span><span class="s1">'localhost'</span><span class="p">)</span> <span class="k">as</span> <span class="n">s</span><span class="p">:</span>
|
||
<span class="n">s</span><span class="o">.</span><span class="n">send_message</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span>
|
||
|
||
|
||
<span class="k">if</span> <span class="vm">__name__</span> <span class="o">==</span> <span class="s1">'__main__'</span><span class="p">:</span>
|
||
<span class="n">main</span><span class="p">()</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>以下是如何将上述MIME消息解压缩到文件目录中的示例：</p>
|
||
<div class="highlight-python3 notranslate"><div class="highlight"><pre><span></span><span class="ch">#!/usr/bin/env python3</span>
|
||
|
||
<span class="sd">"""Unpack a MIME message into a directory of files."""</span>
|
||
|
||
<span class="kn">import</span> <span class="nn">os</span>
|
||
<span class="kn">import</span> <span class="nn">email</span>
|
||
<span class="kn">import</span> <span class="nn">mimetypes</span>
|
||
|
||
<span class="kn">from</span> <span class="nn">email.policy</span> <span class="kn">import</span> <span class="n">default</span>
|
||
|
||
<span class="kn">from</span> <span class="nn">argparse</span> <span class="kn">import</span> <span class="n">ArgumentParser</span>
|
||
|
||
|
||
<span class="k">def</span> <span class="nf">main</span><span class="p">():</span>
|
||
<span class="n">parser</span> <span class="o">=</span> <span class="n">ArgumentParser</span><span class="p">(</span><span class="n">description</span><span class="o">=</span><span class="s2">"""</span><span class="se">\</span>
|
||
<span class="s2">Unpack a MIME message into a directory of files.</span>
|
||
<span class="s2">"""</span><span class="p">)</span>
|
||
<span class="n">parser</span><span class="o">.</span><span class="n">add_argument</span><span class="p">(</span><span class="s1">'-d'</span><span class="p">,</span> <span class="s1">'--directory'</span><span class="p">,</span> <span class="n">required</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span>
|
||
<span class="n">help</span><span class="o">=</span><span class="s2">"""Unpack the MIME message into the named</span>
|
||
<span class="s2"> directory, which will be created if it doesn't already</span>
|
||
<span class="s2"> exist."""</span><span class="p">)</span>
|
||
<span class="n">parser</span><span class="o">.</span><span class="n">add_argument</span><span class="p">(</span><span class="s1">'msgfile'</span><span class="p">)</span>
|
||
<span class="n">args</span> <span class="o">=</span> <span class="n">parser</span><span class="o">.</span><span class="n">parse_args</span><span class="p">()</span>
|
||
|
||
<span class="k">with</span> <span class="nb">open</span><span class="p">(</span><span class="n">args</span><span class="o">.</span><span class="n">msgfile</span><span class="p">,</span> <span class="s1">'rb'</span><span class="p">)</span> <span class="k">as</span> <span class="n">fp</span><span class="p">:</span>
|
||
<span class="n">msg</span> <span class="o">=</span> <span class="n">email</span><span class="o">.</span><span class="n">message_from_binary_file</span><span class="p">(</span><span class="n">fp</span><span class="p">,</span> <span class="n">policy</span><span class="o">=</span><span class="n">default</span><span class="p">)</span>
|
||
|
||
<span class="k">try</span><span class="p">:</span>
|
||
<span class="n">os</span><span class="o">.</span><span class="n">mkdir</span><span class="p">(</span><span class="n">args</span><span class="o">.</span><span class="n">directory</span><span class="p">)</span>
|
||
<span class="k">except</span> <span class="ne">FileExistsError</span><span class="p">:</span>
|
||
<span class="k">pass</span>
|
||
|
||
<span class="n">counter</span> <span class="o">=</span> <span class="mi">1</span>
|
||
<span class="k">for</span> <span class="n">part</span> <span class="ow">in</span> <span class="n">msg</span><span class="o">.</span><span class="n">walk</span><span class="p">():</span>
|
||
<span class="c1"># multipart/* are just containers</span>
|
||
<span class="k">if</span> <span class="n">part</span><span class="o">.</span><span class="n">get_content_maintype</span><span class="p">()</span> <span class="o">==</span> <span class="s1">'multipart'</span><span class="p">:</span>
|
||
<span class="k">continue</span>
|
||
<span class="c1"># Applications should really sanitize the given filename so that an</span>
|
||
<span class="c1"># email message can't be used to overwrite important files</span>
|
||
<span class="n">filename</span> <span class="o">=</span> <span class="n">part</span><span class="o">.</span><span class="n">get_filename</span><span class="p">()</span>
|
||
<span class="k">if</span> <span class="ow">not</span> <span class="n">filename</span><span class="p">:</span>
|
||
<span class="n">ext</span> <span class="o">=</span> <span class="n">mimetypes</span><span class="o">.</span><span class="n">guess_extension</span><span class="p">(</span><span class="n">part</span><span class="o">.</span><span class="n">get_content_type</span><span class="p">())</span>
|
||
<span class="k">if</span> <span class="ow">not</span> <span class="n">ext</span><span class="p">:</span>
|
||
<span class="c1"># Use a generic bag-of-bits extension</span>
|
||
<span class="n">ext</span> <span class="o">=</span> <span class="s1">'.bin'</span>
|
||
<span class="n">filename</span> <span class="o">=</span> <span class="sa">f</span><span class="s1">'part-</span><span class="si">{</span><span class="n">counter</span><span class="si">:</span><span class="s1">03d</span><span class="si">}{</span><span class="n">ext</span><span class="si">}</span><span class="s1">'</span>
|
||
<span class="n">counter</span> <span class="o">+=</span> <span class="mi">1</span>
|
||
<span class="k">with</span> <span class="nb">open</span><span class="p">(</span><span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">args</span><span class="o">.</span><span class="n">directory</span><span class="p">,</span> <span class="n">filename</span><span class="p">),</span> <span class="s1">'wb'</span><span class="p">)</span> <span class="k">as</span> <span class="n">fp</span><span class="p">:</span>
|
||
<span class="n">fp</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="n">part</span><span class="o">.</span><span class="n">get_payload</span><span class="p">(</span><span class="n">decode</span><span class="o">=</span><span class="kc">True</span><span class="p">))</span>
|
||
|
||
|
||
<span class="k">if</span> <span class="vm">__name__</span> <span class="o">==</span> <span class="s1">'__main__'</span><span class="p">:</span>
|
||
<span class="n">main</span><span class="p">()</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>以下是如何使用备用纯文本版本创建 HTML 消息的示例。 为了让事情变得更有趣，我们在 html 部分中包含了一个相关的图像，我们保存了一份我们要发送的内容到硬盘中，然后发送它。</p>
|
||
<div class="highlight-python3 notranslate"><div class="highlight"><pre><span></span><span class="ch">#!/usr/bin/env python3</span>
|
||
|
||
<span class="kn">import</span> <span class="nn">smtplib</span>
|
||
|
||
<span class="kn">from</span> <span class="nn">email.message</span> <span class="kn">import</span> <span class="n">EmailMessage</span>
|
||
<span class="kn">from</span> <span class="nn">email.headerregistry</span> <span class="kn">import</span> <span class="n">Address</span>
|
||
<span class="kn">from</span> <span class="nn">email.utils</span> <span class="kn">import</span> <span class="n">make_msgid</span>
|
||
|
||
<span class="c1"># Create the base text message.</span>
|
||
<span class="n">msg</span> <span class="o">=</span> <span class="n">EmailMessage</span><span class="p">()</span>
|
||
<span class="n">msg</span><span class="p">[</span><span class="s1">'Subject'</span><span class="p">]</span> <span class="o">=</span> <span class="s2">"Ayons asperges pour le déjeuner"</span>
|
||
<span class="n">msg</span><span class="p">[</span><span class="s1">'From'</span><span class="p">]</span> <span class="o">=</span> <span class="n">Address</span><span class="p">(</span><span class="s2">"Pepé Le Pew"</span><span class="p">,</span> <span class="s2">"pepe"</span><span class="p">,</span> <span class="s2">"example.com"</span><span class="p">)</span>
|
||
<span class="n">msg</span><span class="p">[</span><span class="s1">'To'</span><span class="p">]</span> <span class="o">=</span> <span class="p">(</span><span class="n">Address</span><span class="p">(</span><span class="s2">"Penelope Pussycat"</span><span class="p">,</span> <span class="s2">"penelope"</span><span class="p">,</span> <span class="s2">"example.com"</span><span class="p">),</span>
|
||
<span class="n">Address</span><span class="p">(</span><span class="s2">"Fabrette Pussycat"</span><span class="p">,</span> <span class="s2">"fabrette"</span><span class="p">,</span> <span class="s2">"example.com"</span><span class="p">))</span>
|
||
<span class="n">msg</span><span class="o">.</span><span class="n">set_content</span><span class="p">(</span><span class="s2">"""</span><span class="se">\</span>
|
||
<span class="s2">Salut!</span>
|
||
|
||
<span class="s2">Cela ressemble à un excellent recipie[1] déjeuner.</span>
|
||
|
||
<span class="s2">[1] http://www.yummly.com/recipe/Roasted-Asparagus-Epicurious-203718</span>
|
||
|
||
<span class="s2">--Pepé</span>
|
||
<span class="s2">"""</span><span class="p">)</span>
|
||
|
||
<span class="c1"># Add the html version. This converts the message into a multipart/alternative</span>
|
||
<span class="c1"># container, with the original text message as the first part and the new html</span>
|
||
<span class="c1"># message as the second part.</span>
|
||
<span class="n">asparagus_cid</span> <span class="o">=</span> <span class="n">make_msgid</span><span class="p">()</span>
|
||
<span class="n">msg</span><span class="o">.</span><span class="n">add_alternative</span><span class="p">(</span><span class="s2">"""</span><span class="se">\</span>
|
||
<span class="s2"><html></span>
|
||
<span class="s2"> <head></head></span>
|
||
<span class="s2"> <body></span>
|
||
<span class="s2"> <p>Salut!</p></span>
|
||
<span class="s2"> <p>Cela ressemble à un excellent</span>
|
||
<span class="s2"> <a href="http://www.yummly.com/recipe/Roasted-Asparagus-Epicurious-203718"></span>
|
||
<span class="s2"> recipie</span>
|
||
<span class="s2"> </a> déjeuner.</span>
|
||
<span class="s2"> </p></span>
|
||
<span class="s2"> <img src="cid:</span><span class="si">{asparagus_cid}</span><span class="s2">" /></span>
|
||
<span class="s2"> </body></span>
|
||
<span class="s2"></html></span>
|
||
<span class="s2">"""</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">asparagus_cid</span><span class="o">=</span><span class="n">asparagus_cid</span><span class="p">[</span><span class="mi">1</span><span class="p">:</span><span class="o">-</span><span class="mi">1</span><span class="p">]),</span> <span class="n">subtype</span><span class="o">=</span><span class="s1">'html'</span><span class="p">)</span>
|
||
<span class="c1"># note that we needed to peel the <> off the msgid for use in the html.</span>
|
||
|
||
<span class="c1"># Now add the related image to the html part.</span>
|
||
<span class="k">with</span> <span class="nb">open</span><span class="p">(</span><span class="s2">"roasted-asparagus.jpg"</span><span class="p">,</span> <span class="s1">'rb'</span><span class="p">)</span> <span class="k">as</span> <span class="n">img</span><span class="p">:</span>
|
||
<span class="n">msg</span><span class="o">.</span><span class="n">get_payload</span><span class="p">()[</span><span class="mi">1</span><span class="p">]</span><span class="o">.</span><span class="n">add_related</span><span class="p">(</span><span class="n">img</span><span class="o">.</span><span class="n">read</span><span class="p">(),</span> <span class="s1">'image'</span><span class="p">,</span> <span class="s1">'jpeg'</span><span class="p">,</span>
|
||
<span class="n">cid</span><span class="o">=</span><span class="n">asparagus_cid</span><span class="p">)</span>
|
||
|
||
<span class="c1"># Make a local copy of what we are going to send.</span>
|
||
<span class="k">with</span> <span class="nb">open</span><span class="p">(</span><span class="s1">'outgoing.msg'</span><span class="p">,</span> <span class="s1">'wb'</span><span class="p">)</span> <span class="k">as</span> <span class="n">f</span><span class="p">:</span>
|
||
<span class="n">f</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="nb">bytes</span><span class="p">(</span><span class="n">msg</span><span class="p">))</span>
|
||
|
||
<span class="c1"># Send the message via local SMTP server.</span>
|
||
<span class="k">with</span> <span class="n">smtplib</span><span class="o">.</span><span class="n">SMTP</span><span class="p">(</span><span class="s1">'localhost'</span><span class="p">)</span> <span class="k">as</span> <span class="n">s</span><span class="p">:</span>
|
||
<span class="n">s</span><span class="o">.</span><span class="n">send_message</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>如果我们发送最后一个示例中的消息，这是我们可以处理它的一种方法：</p>
|
||
<div class="highlight-python3 notranslate"><div class="highlight"><pre><span></span><span class="kn">import</span> <span class="nn">os</span>
|
||
<span class="kn">import</span> <span class="nn">sys</span>
|
||
<span class="kn">import</span> <span class="nn">tempfile</span>
|
||
<span class="kn">import</span> <span class="nn">mimetypes</span>
|
||
<span class="kn">import</span> <span class="nn">webbrowser</span>
|
||
|
||
<span class="c1"># Import the email modules we'll need</span>
|
||
<span class="kn">from</span> <span class="nn">email</span> <span class="kn">import</span> <span class="n">policy</span>
|
||
<span class="kn">from</span> <span class="nn">email.parser</span> <span class="kn">import</span> <span class="n">BytesParser</span>
|
||
|
||
<span class="c1"># An imaginary module that would make this work and be safe.</span>
|
||
<span class="kn">from</span> <span class="nn">imaginary</span> <span class="kn">import</span> <span class="n">magic_html_parser</span>
|
||
|
||
<span class="c1"># In a real program you'd get the filename from the arguments.</span>
|
||
<span class="k">with</span> <span class="nb">open</span><span class="p">(</span><span class="s1">'outgoing.msg'</span><span class="p">,</span> <span class="s1">'rb'</span><span class="p">)</span> <span class="k">as</span> <span class="n">fp</span><span class="p">:</span>
|
||
<span class="n">msg</span> <span class="o">=</span> <span class="n">BytesParser</span><span class="p">(</span><span class="n">policy</span><span class="o">=</span><span class="n">policy</span><span class="o">.</span><span class="n">default</span><span class="p">)</span><span class="o">.</span><span class="n">parse</span><span class="p">(</span><span class="n">fp</span><span class="p">)</span>
|
||
|
||
<span class="c1"># Now the header items can be accessed as a dictionary, and any non-ASCII will</span>
|
||
<span class="c1"># be converted to unicode:</span>
|
||
<span class="nb">print</span><span class="p">(</span><span class="s1">'To:'</span><span class="p">,</span> <span class="n">msg</span><span class="p">[</span><span class="s1">'to'</span><span class="p">])</span>
|
||
<span class="nb">print</span><span class="p">(</span><span class="s1">'From:'</span><span class="p">,</span> <span class="n">msg</span><span class="p">[</span><span class="s1">'from'</span><span class="p">])</span>
|
||
<span class="nb">print</span><span class="p">(</span><span class="s1">'Subject:'</span><span class="p">,</span> <span class="n">msg</span><span class="p">[</span><span class="s1">'subject'</span><span class="p">])</span>
|
||
|
||
<span class="c1"># If we want to print a preview of the message content, we can extract whatever</span>
|
||
<span class="c1"># the least formatted payload is and print the first three lines. Of course,</span>
|
||
<span class="c1"># if the message has no plain text part printing the first three lines of html</span>
|
||
<span class="c1"># is probably useless, but this is just a conceptual example.</span>
|
||
<span class="n">simplest</span> <span class="o">=</span> <span class="n">msg</span><span class="o">.</span><span class="n">get_body</span><span class="p">(</span><span class="n">preferencelist</span><span class="o">=</span><span class="p">(</span><span class="s1">'plain'</span><span class="p">,</span> <span class="s1">'html'</span><span class="p">))</span>
|
||
<span class="nb">print</span><span class="p">()</span>
|
||
<span class="nb">print</span><span class="p">(</span><span class="s1">''</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">simplest</span><span class="o">.</span><span class="n">get_content</span><span class="p">()</span><span class="o">.</span><span class="n">splitlines</span><span class="p">(</span><span class="n">keepends</span><span class="o">=</span><span class="kc">True</span><span class="p">)[:</span><span class="mi">3</span><span class="p">]))</span>
|
||
|
||
<span class="n">ans</span> <span class="o">=</span> <span class="nb">input</span><span class="p">(</span><span class="s2">"View full message?"</span><span class="p">)</span>
|
||
<span class="k">if</span> <span class="n">ans</span><span class="o">.</span><span class="n">lower</span><span class="p">()[</span><span class="mi">0</span><span class="p">]</span> <span class="o">==</span> <span class="s1">'n'</span><span class="p">:</span>
|
||
<span class="n">sys</span><span class="o">.</span><span class="n">exit</span><span class="p">()</span>
|
||
|
||
<span class="c1"># We can extract the richest alternative in order to display it:</span>
|
||
<span class="n">richest</span> <span class="o">=</span> <span class="n">msg</span><span class="o">.</span><span class="n">get_body</span><span class="p">()</span>
|
||
<span class="n">partfiles</span> <span class="o">=</span> <span class="p">{}</span>
|
||
<span class="k">if</span> <span class="n">richest</span><span class="p">[</span><span class="s1">'content-type'</span><span class="p">]</span><span class="o">.</span><span class="n">maintype</span> <span class="o">==</span> <span class="s1">'text'</span><span class="p">:</span>
|
||
<span class="k">if</span> <span class="n">richest</span><span class="p">[</span><span class="s1">'content-type'</span><span class="p">]</span><span class="o">.</span><span class="n">subtype</span> <span class="o">==</span> <span class="s1">'plain'</span><span class="p">:</span>
|
||
<span class="k">for</span> <span class="n">line</span> <span class="ow">in</span> <span class="n">richest</span><span class="o">.</span><span class="n">get_content</span><span class="p">()</span><span class="o">.</span><span class="n">splitlines</span><span class="p">():</span>
|
||
<span class="nb">print</span><span class="p">(</span><span class="n">line</span><span class="p">)</span>
|
||
<span class="n">sys</span><span class="o">.</span><span class="n">exit</span><span class="p">()</span>
|
||
<span class="k">elif</span> <span class="n">richest</span><span class="p">[</span><span class="s1">'content-type'</span><span class="p">]</span><span class="o">.</span><span class="n">subtype</span> <span class="o">==</span> <span class="s1">'html'</span><span class="p">:</span>
|
||
<span class="n">body</span> <span class="o">=</span> <span class="n">richest</span>
|
||
<span class="k">else</span><span class="p">:</span>
|
||
<span class="nb">print</span><span class="p">(</span><span class="s2">"Don't know how to display </span><span class="si">{}</span><span class="s2">"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">richest</span><span class="o">.</span><span class="n">get_content_type</span><span class="p">()))</span>
|
||
<span class="n">sys</span><span class="o">.</span><span class="n">exit</span><span class="p">()</span>
|
||
<span class="k">elif</span> <span class="n">richest</span><span class="p">[</span><span class="s1">'content-type'</span><span class="p">]</span><span class="o">.</span><span class="n">content_type</span> <span class="o">==</span> <span class="s1">'multipart/related'</span><span class="p">:</span>
|
||
<span class="n">body</span> <span class="o">=</span> <span class="n">richest</span><span class="o">.</span><span class="n">get_body</span><span class="p">(</span><span class="n">preferencelist</span><span class="o">=</span><span class="p">(</span><span class="s1">'html'</span><span class="p">))</span>
|
||
<span class="k">for</span> <span class="n">part</span> <span class="ow">in</span> <span class="n">richest</span><span class="o">.</span><span class="n">iter_attachments</span><span class="p">():</span>
|
||
<span class="n">fn</span> <span class="o">=</span> <span class="n">part</span><span class="o">.</span><span class="n">get_filename</span><span class="p">()</span>
|
||
<span class="k">if</span> <span class="n">fn</span><span class="p">:</span>
|
||
<span class="n">extension</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">splitext</span><span class="p">(</span><span class="n">part</span><span class="o">.</span><span class="n">get_filename</span><span class="p">())[</span><span class="mi">1</span><span class="p">]</span>
|
||
<span class="k">else</span><span class="p">:</span>
|
||
<span class="n">extension</span> <span class="o">=</span> <span class="n">mimetypes</span><span class="o">.</span><span class="n">guess_extension</span><span class="p">(</span><span class="n">part</span><span class="o">.</span><span class="n">get_content_type</span><span class="p">())</span>
|
||
<span class="k">with</span> <span class="n">tempfile</span><span class="o">.</span><span class="n">NamedTemporaryFile</span><span class="p">(</span><span class="n">suffix</span><span class="o">=</span><span class="n">extension</span><span class="p">,</span> <span class="n">delete</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> <span class="k">as</span> <span class="n">f</span><span class="p">:</span>
|
||
<span class="n">f</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="n">part</span><span class="o">.</span><span class="n">get_content</span><span class="p">())</span>
|
||
<span class="c1"># again strip the <> to go from email form of cid to html form.</span>
|
||
<span class="n">partfiles</span><span class="p">[</span><span class="n">part</span><span class="p">[</span><span class="s1">'content-id'</span><span class="p">][</span><span class="mi">1</span><span class="p">:</span><span class="o">-</span><span class="mi">1</span><span class="p">]]</span> <span class="o">=</span> <span class="n">f</span><span class="o">.</span><span class="n">name</span>
|
||
<span class="k">else</span><span class="p">:</span>
|
||
<span class="nb">print</span><span class="p">(</span><span class="s2">"Don't know how to display </span><span class="si">{}</span><span class="s2">"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">richest</span><span class="o">.</span><span class="n">get_content_type</span><span class="p">()))</span>
|
||
<span class="n">sys</span><span class="o">.</span><span class="n">exit</span><span class="p">()</span>
|
||
<span class="k">with</span> <span class="n">tempfile</span><span class="o">.</span><span class="n">NamedTemporaryFile</span><span class="p">(</span><span class="n">mode</span><span class="o">=</span><span class="s1">'w'</span><span class="p">,</span> <span class="n">delete</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> <span class="k">as</span> <span class="n">f</span><span class="p">:</span>
|
||
<span class="c1"># The magic_html_parser has to rewrite the href="cid:...." attributes to</span>
|
||
<span class="c1"># point to the filenames in partfiles. It also has to do a safety-sanitize</span>
|
||
<span class="c1"># of the html. It could be written using html.parser.</span>
|
||
<span class="n">f</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="n">magic_html_parser</span><span class="p">(</span><span class="n">body</span><span class="o">.</span><span class="n">get_content</span><span class="p">(),</span> <span class="n">partfiles</span><span class="p">))</span>
|
||
<span class="n">webbrowser</span><span class="o">.</span><span class="n">open</span><span class="p">(</span><span class="n">f</span><span class="o">.</span><span class="n">name</span><span class="p">)</span>
|
||
<span class="n">os</span><span class="o">.</span><span class="n">remove</span><span class="p">(</span><span class="n">f</span><span class="o">.</span><span class="n">name</span><span class="p">)</span>
|
||
<span class="k">for</span> <span class="n">fn</span> <span class="ow">in</span> <span class="n">partfiles</span><span class="o">.</span><span class="n">values</span><span class="p">():</span>
|
||
<span class="n">os</span><span class="o">.</span><span class="n">remove</span><span class="p">(</span><span class="n">fn</span><span class="p">)</span>
|
||
|
||
<span class="c1"># Of course, there are lots of email messages that could break this simple</span>
|
||
<span class="c1"># minded program, but it will handle the most common ones.</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>直到输出提示，上面的输出是：</p>
|
||
<div class="highlight-none notranslate"><div class="highlight"><pre><span></span>To: Penelope Pussycat <penelope@example.com>, Fabrette Pussycat <fabrette@example.com>
|
||
From: Pepé Le Pew <pepe@example.com>
|
||
Subject: Ayons asperges pour le déjeuner
|
||
|
||
Salut!
|
||
|
||
Cela ressemble à un excellent recipie[1] déjeuner.
|
||
</pre></div>
|
||
</div>
|
||
<p class="rubric">备注</p>
|
||
<dl class="footnote brackets">
|
||
<dt class="label" id="id3"><span class="brackets"><a class="fn-backref" href="#id2">1</a></span></dt>
|
||
<dd><p>感谢 Matthew Dixon Cowles 提供最初的灵感和示例。</p>
|
||
</dd>
|
||
</dl>
|
||
</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="email.contentmanager.html"
|
||
title="上一章"><code class="xref py py-mod docutils literal notranslate"><span class="pre">email.contentmanager</span></code>: 管理 MIME 内容</a></p>
|
||
<h4>下一个主题</h4>
|
||
<p class="topless"><a href="email.compat32-message.html"
|
||
title="下一章"><code class="xref py py-mod docutils literal notranslate"><span class="pre">email.message.Message</span></code>: 使用 <code class="xref py py-data docutils literal notranslate"><span class="pre">compat32</span></code> API 来表示电子邮件消息</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/email.examples.rst"
|
||
rel="nofollow">显示源代码
|
||
</a>
|
||
</li>
|
||
</ul>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<div class="clearer"></div>
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</div>
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<div class="related" role="navigation" aria-label="related navigation">
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<h3>导航</h3>
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<ul>
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<li class="right" style="margin-right: 10px">
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<a href="../genindex.html" title="总目录"
|
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>索引</a></li>
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||
<li class="right" >
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<a href="../py-modindex.html" title="Python 模块索引"
|
||
>模块</a> |</li>
|
||
<li class="right" >
|
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<a href="email.compat32-message.html" title="email.message.Message: 使用 compat32 API 来表示电子邮件消息"
|
||
>下一页</a> |</li>
|
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<li class="right" >
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<a href="email.contentmanager.html" title="email.contentmanager: 管理 MIME 内容"
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<li class="nav-item nav-item-2"><a href="netdata.html" >互联网数据处理</a> »</li>
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<li class="nav-item nav-item-3"><a href="email.html" ><code class="xref py py-mod docutils literal notranslate"><span class="pre">email</span></code> --- 电子邮件与 MIME 处理包</a> »</li>
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<div class="inline-search" role="search">
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© <a href="../copyright.html">版权所有</a> 2001-2024, Python Software Foundation.
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|
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This page is licensed under the Python Software Foundation License Version 2.
|
||
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|
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Examples, recipes, and other code in the documentation are additionally licensed under the Zero Clause BSD License.
|
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<a href="https://www.python.org/psf/donations/">Please donate.</a>
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||
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||
<br />
|
||
|
||
最后更新于 12月 09, 2024.
|
||
<a href="https://docs.python.org/3/bugs.html">Found a bug</a>?
|
||
<br />
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||
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Created using <a href="https://www.sphinx-doc.org/">Sphinx</a> 2.4.4.
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