* **All coroutines must first be "primed" by calling `'next(<coroutine>)'`.**

* **Remembering to call next() is easy to forget.**

def coroutine(func):

</ul><div><h3 id="helperdecorator">Helper Decorator</h3><ul>

<li><strong>All coroutines must first be "primed" by calling <code class="python hljs"><span class="hljs-string">'next(&lt;coroutine&gt;)'</span></code>.</strong></li>

<li><strong>Remembering to call next() is easy to forget.</strong></li>

</ul><pre><code class="python language-python hljs"><span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">coroutine</span><span class="hljs-params">(func)</span>:</span>

<span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">out</span><span class="hljs-params">(*args, **kwargs)</span>:</span>

cr = func(*args, **kwargs)

<strong>open function, <a href="#open">22</a>-<a href="#file">23</a></strong><br>

<strong>operator module, <a href="#operator">31</a></strong><br>

<strong>OS commands, <a href="#oscommands">24</a>-<a href="#shellcommands">25</a></strong><br>

<h3 id="p">P</h3>

<p><strong>partial function, <a href="#partial">12</a></strong><br>

<strong>paths, <a href="#path">23</a>-<a href="#pathlib">24</a></strong><br>

<strong>splat operator, <a href="#splatoperator">10</a>-<a href="#otheruses">11</a></strong><br>

<strong>statistics module, <a href="#statistics">7</a></strong><br>

<strong>strings, <a href="#string">5</a></strong><br>

<strong>subprocess module, <a href="#usingsubprocess">25</a></strong><br>

<strong>synthesizer, <a href="#synthesizer">41</a></strong><br>

<strong>sys module, <a href="#lrucache">15</a>, <a href="#commonbuiltinexceptions">21</a>, <a href="#print">22</a>, <a href="#commandlinearguments">22</a></strong> </p>