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  <div class="section" id="module-celery.timer">
<h1>Timers - celery.timer<a class="headerlink" href="#module-celery.timer" title="Permalink to this headline">¶</a></h1>
<p>celery.timer</p>
<dl class="class">
<dt id="celery.timer.EventTimer">
<em class="property">
class </em><tt class="descclassname">celery.timer.</tt><tt class="descname">EventTimer</tt><big>(</big><em>event</em>, <em>interval=None</em><big>)</big><a class="headerlink" href="#celery.timer.EventTimer" title="Permalink to this definition">¶</a></dt>
<dd><p>Do something at an interval.</p>
<dl class="method">
<dt id="celery.timer.EventTimer.tick">
<tt class="descname">tick</tt><big>(</big><big>)</big><a class="headerlink" href="#celery.timer.EventTimer.tick" title="Permalink to this definition">¶</a></dt>
<dd><p>Run a event timer clock tick.</p>
<p>When the interval has run, the event will be triggered.
If interval is not set, the event will never be triggered.</p>
</dd></dl>

</dd></dl>

<dl class="exception">
<dt id="celery.timer.TimeoutError">
<em class="property">
exception </em><tt class="descclassname">celery.timer.</tt><tt class="descname">TimeoutError</tt><a class="headerlink" href="#celery.timer.TimeoutError" title="Permalink to this definition">¶</a></dt>
<dd>The event has timed out.</dd></dl>

<dl class="class">
<dt id="celery.timer.TimeoutTimer">
<em class="property">
class </em><tt class="descclassname">celery.timer.</tt><tt class="descname">TimeoutTimer</tt><big>(</big><em>timeout</em><big>)</big><a class="headerlink" href="#celery.timer.TimeoutTimer" title="Permalink to this definition">¶</a></dt>
<dd><p>A timer that raises <tt class="docutils literal"><span class="pre">TimeoutError</span></tt> when the time has run out.</p>
<dl class="method">
<dt id="celery.timer.TimeoutTimer.tick">
<tt class="descname">tick</tt><big>(</big><big>)</big><a class="headerlink" href="#celery.timer.TimeoutTimer.tick" title="Permalink to this definition">¶</a></dt>
<dd><p>Run a timeout timer clock tick.</p>
<p>When <tt class="docutils literal"><span class="pre">timeout</span></tt> seconds has passed, it will raise a
<a title="celery.timer.TimeoutTimer" class="reference internal" href="#celery.timer.TimeoutTimer"><tt class="xref docutils literal"><span class="pre">TimeoutTimer</span></tt></a> exception.
If <tt class="docutils literal"><span class="pre">timeout</span></tt> is not set, it will never time out.</p>
</dd></dl>

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