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  <div class="section" id="module-celery.utils">
<h1>Multiprocessing Worker - celery.worker<a class="headerlink" href="#module-celery.utils" title="Permalink to this headline">¶</a></h1>
<p>Utility functions</p>
<dl class="function">
<dt id="celery.utils.chunks">
<tt class="descclassname">celery.utils.</tt><tt class="descname">chunks</tt><big>(</big><em>it</em>, <em>n</em><big>)</big><a class="headerlink" href="#celery.utils.chunks" title="Permalink to this definition">¶</a></dt>
<dd><p>Split an iterator into chunks with <tt class="docutils literal"><span class="pre">n</span></tt> elements each.</p>
<p>Examples</p>
<blockquote>
<p># n == 2
&gt;&gt;&gt; x = chunks(iter([0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]), 2)
&gt;&gt;&gt; list(x)
[[0, 1], [2, 3], [4, 5], [6, 7], [8, 9], [10]]</p>
<p># n == 3
&gt;&gt;&gt; x = chunks(iter([0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]), 3)
&gt;&gt;&gt; list(x)
[[0, 1, 2], [3, 4, 5], [6, 7, 8], [9, 10]]</p>
</blockquote>
</dd></dl>

<dl class="function">
<dt id="celery.utils.gen_unique_id">
<tt class="descclassname">celery.utils.</tt><tt class="descname">gen_unique_id</tt><big>(</big><big>)</big><a class="headerlink" href="#celery.utils.gen_unique_id" title="Permalink to this definition">¶</a></dt>
<dd><p>Generate a unique id, having - hopefully - a very small chance of
collission.</p>
<p>For now this is provided by <tt class="xref docutils literal"><span class="pre">uuid.uuid4()</span></tt>.</p>
</dd></dl>

<dl class="function">
<dt id="celery.utils.mitemgetter">
<tt class="descclassname">celery.utils.</tt><tt class="descname">mitemgetter</tt><big>(</big><em>*keys</em><big>)</big><a class="headerlink" href="#celery.utils.mitemgetter" title="Permalink to this definition">¶</a></dt>
<dd>Like <tt class="xref docutils literal"><span class="pre">operator.itemgetter()</span></tt> but returns <cite>None</cite> on missing keys
instead of raising <tt class="xref docutils literal"><span class="pre">KeyError</span></tt>.</dd></dl>

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