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  <div class="section" id="module-celery.task">
<h1>Tasks - celery.task<a class="headerlink" href="#module-celery.task" title="Permalink to this headline">¶</a></h1>
<dl class="class">
<dt id="celery.task.AsynchronousMapTask">
<em class="property">
class </em><tt class="descclassname">celery.task.</tt><tt class="descname">AsynchronousMapTask</tt><a class="headerlink" href="#celery.task.AsynchronousMapTask" title="Permalink to this definition">¶</a></dt>
<dd>Task used internally by <tt class="docutils literal"><span class="pre">dmap_async</span></tt>.</dd></dl>

<dl class="class">
<dt id="celery.task.DeleteExpiredTaskMetaTask">
<em class="property">
class </em><tt class="descclassname">celery.task.</tt><tt class="descname">DeleteExpiredTaskMetaTask</tt><a class="headerlink" href="#celery.task.DeleteExpiredTaskMetaTask" title="Permalink to this definition">¶</a></dt>
<dd><p>A periodic task that deletes expired task metadata every day.</p>
<p>This runs the current backend&#8217;s cleanup() method.</p>
</dd></dl>

<dl class="class">
<dt id="celery.task.ExecuteRemoteTask">
<em class="property">
class </em><tt class="descclassname">celery.task.</tt><tt class="descname">ExecuteRemoteTask</tt><a class="headerlink" href="#celery.task.ExecuteRemoteTask" title="Permalink to this definition">¶</a></dt>
<dd><p>Execute arbitrary function/object.</p>
<p>The object must be pickleable, so you can&#8217;t use lambdas or functions
defined in the REPL.</p>
<dl class="method">
<dt id="celery.task.ExecuteRemoteTask.run">
<tt class="descname">run</tt><big>(</big><em>ser_callable</em>, <em>fargs</em>, <em>fkwargs</em>, <em>**kwargs</em><big>)</big><a class="headerlink" href="#celery.task.ExecuteRemoteTask.run" title="Permalink to this definition">¶</a></dt>
<dd>Execute the pickled <tt class="docutils literal"><span class="pre">ser_callable</span></tt>, with <tt class="docutils literal"><span class="pre">fargs</span></tt> as positional
arguments and <tt class="docutils literal"><span class="pre">fkwargs</span></tt> as keyword arguments.</dd></dl>

</dd></dl>

<dl class="class">
<dt id="celery.task.PeriodicTask">
<em class="property">
class </em><tt class="descclassname">celery.task.</tt><tt class="descname">PeriodicTask</tt><a class="headerlink" href="#celery.task.PeriodicTask" title="Permalink to this definition">¶</a></dt>
<dd><p>A periodic task is a task that behaves like a cron job.</p>
<p>The <tt class="docutils literal"><span class="pre">run_every</span></tt> attribute defines how often the task is run (its
interval), it can be either a <tt class="docutils literal"><span class="pre">datetime.timedelta</span></tt> object or a integer
specifying the time in seconds.</p>
<p>You have to register the periodic task in the task registry.</p>
<div class="highlight-python"><div class="highlight"><pre><span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">celery.task</span> <span class="kn">import</span> <span class="n">tasks</span><span class="p">,</span> <span class="n">PeriodicTask</span>
<span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">datetime</span> <span class="kn">import</span> <span class="n">timedelta</span>
<span class="gp">&gt;&gt;&gt; </span><span class="k">class</span> <span class="nc">MyPeriodicTask</span><span class="p">(</span><span class="n">PeriodicTask</span><span class="p">):</span>
<span class="gp">... </span>    <span class="n">name</span> <span class="o">=</span> <span class="s">&quot;my_periodic_task&quot;</span>
<span class="gp">... </span>    <span class="n">run_every</span> <span class="o">=</span> <span class="n">timedelta</span><span class="p">(</span><span class="n">seconds</span><span class="o">=</span><span class="mf">30</span><span class="p">)</span>
<span class="gp">...</span>
<span class="gp">... </span>    <span class="k">def</span> <span class="nf">run</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
<span class="gp">... </span>        <span class="n">logger</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_logger</span><span class="p">(</span><span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
<span class="gp">... </span>        <span class="n">logger</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s">&quot;Running MyPeriodicTask&quot;</span><span class="p">)</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">tasks</span><span class="o">.</span><span class="n">register</span><span class="p">(</span><span class="n">MyPeriodicTask</span><span class="p">)</span>
</pre></div>
</div>
</dd></dl>

<dl class="class">
<dt id="celery.task.Task">
<em class="property">
class </em><tt class="descclassname">celery.task.</tt><tt class="descname">Task</tt><a class="headerlink" href="#celery.task.Task" title="Permalink to this definition">¶</a></dt>
<dd><p>A task that can be delayed for execution by the <tt class="docutils literal"><span class="pre">celery</span></tt> daemon.</p>
<p>All subclasses of <tt class="docutils literal"><span class="pre">Task</span></tt> has to define the <tt class="docutils literal"><span class="pre">name</span></tt> attribute, which is
the name of the task that can be passed to <tt class="docutils literal"><span class="pre">celery.task.delay_task</span></tt>,
it also has to define the <tt class="docutils literal"><span class="pre">run</span></tt> method, which is the actual method the
<tt class="docutils literal"><span class="pre">celery</span></tt> daemon executes.</p>
<p>This is a simple task just logging a message,</p>
<div class="highlight-python"><div class="highlight"><pre><span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">celery.task</span> <span class="kn">import</span> <span class="n">tasks</span><span class="p">,</span> <span class="n">Task</span>
<span class="gp">&gt;&gt;&gt; </span><span class="k">class</span> <span class="nc">MyTask</span><span class="p">(</span><span class="n">Task</span><span class="p">):</span>
<span class="gp">... </span>    <span class="n">name</span> <span class="o">=</span> <span class="s">&quot;mytask&quot;</span>
<span class="gp">...</span>
<span class="gp">... </span>    <span class="k">def</span> <span class="nf">run</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">some_arg</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
<span class="gp">... </span>        <span class="n">logger</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_logger</span><span class="p">(</span><span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
<span class="gp">... </span>        <span class="n">logger</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s">&quot;Running MyTask with arg some_arg=</span><span class="si">%s</span><span class="s">&quot;</span> <span class="o">%</span>
<span class="gp">... </span>                    <span class="n">some_arg</span><span class="p">))</span>
<span class="gp">... </span>        <span class="k">return</span> <span class="mf">42</span>
<span class="gp">... </span><span class="n">tasks</span><span class="o">.</span><span class="n">register</span><span class="p">(</span><span class="n">MyTask</span><span class="p">)</span>
</pre></div>
</div>
<p>You can delay the task using the classmethod <tt class="docutils literal"><span class="pre">delay</span></tt>...</p>
<div class="highlight-python"><div class="highlight"><pre><span class="gp">&gt;&gt;&gt; </span><span class="n">result</span> <span class="o">=</span> <span class="n">MyTask</span><span class="o">.</span><span class="n">delay</span><span class="p">(</span><span class="n">some_arg</span><span class="o">=</span><span class="s">&quot;foo&quot;</span><span class="p">)</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">result</span><span class="o">.</span><span class="n">status</span> <span class="c"># after some time</span>
<span class="go">&#39;DONE&#39;</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">result</span><span class="o">.</span><span class="n">result</span>
<span class="go">42</span>
</pre></div>
</div>
<p>...or using the <tt class="docutils literal"><span class="pre">celery.task.delay_task</span></tt> function, by passing the
name of the task.</p>
<div class="highlight-python"><div class="highlight"><pre><span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">celery.task</span> <span class="kn">import</span> <span class="n">delay_task</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">delay_task</span><span class="p">(</span><span class="n">MyTask</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">some_arg</span><span class="o">=</span><span class="s">&quot;foo&quot;</span><span class="p">)</span>
</pre></div>
</div>
<dl class="classmethod">
<dt id="celery.task.Task.delay">
<em class="property">
classmethod </em><tt class="descname">delay</tt><big>(</big><em>*args</em>, <em>**kwargs</em><big>)</big><a class="headerlink" href="#celery.task.Task.delay" title="Permalink to this definition">¶</a></dt>
<dd>Delay this task for execution by the <tt class="docutils literal"><span class="pre">celery</span></tt> daemon(s).</dd></dl>

<dl class="method">
<dt id="celery.task.Task.get_consumer">
<tt class="descname">get_consumer</tt><big>(</big><big>)</big><a class="headerlink" href="#celery.task.Task.get_consumer" title="Permalink to this definition">¶</a></dt>
<dd>Get a celery task message consumer.</dd></dl>

<dl class="method">
<dt id="celery.task.Task.get_logger">
<tt class="descname">get_logger</tt><big>(</big><em>**kwargs</em><big>)</big><a class="headerlink" href="#celery.task.Task.get_logger" title="Permalink to this definition">¶</a></dt>
<dd>Get a process-aware logger object.</dd></dl>

<dl class="method">
<dt id="celery.task.Task.get_publisher">
<tt class="descname">get_publisher</tt><big>(</big><big>)</big><a class="headerlink" href="#celery.task.Task.get_publisher" title="Permalink to this definition">¶</a></dt>
<dd>Get a celery task message publisher.</dd></dl>

<dl class="method">
<dt id="celery.task.Task.run">
<tt class="descname">run</tt><big>(</big><em>*args</em>, <em>**kwargs</em><big>)</big><a class="headerlink" href="#celery.task.Task.run" title="Permalink to this definition">¶</a></dt>
<dd>The actual task. All subclasses of <a title="celery.task.Task" class="reference internal" href="#celery.task.Task"><tt class="xref docutils literal"><span class="pre">Task</span></tt></a> must define
the run method, if not a <tt class="docutils literal"><span class="pre">NotImplementedError</span></tt> exception is raised.</dd></dl>

</dd></dl>

<dl class="class">
<dt id="celery.task.TaskSet">
<em class="property">
class </em><tt class="descclassname">celery.task.</tt><tt class="descname">TaskSet</tt><big>(</big><em>task</em>, <em>args</em><big>)</big><a class="headerlink" href="#celery.task.TaskSet" title="Permalink to this definition">¶</a></dt>
<dd><p>A task containing several subtasks, making it possible
to track how many, or when all of the tasks are completed.</p>
<blockquote>
<div class="highlight-python"><div class="highlight"><pre><span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">djangofeeds.tasks</span> <span class="kn">import</span> <span class="n">RefreshFeedTask</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">taskset</span> <span class="o">=</span> <span class="n">TaskSet</span><span class="p">(</span><span class="n">RefreshFeedTask</span><span class="p">,</span> <span class="n">args</span><span class="o">=</span><span class="p">[</span>
<span class="gp">... </span>                <span class="p">{</span><span class="s">&quot;feed_url&quot;</span><span class="p">:</span> <span class="s">&quot;http://cnn.com/rss&quot;</span><span class="p">},</span>
<span class="gp">... </span>                <span class="p">{</span><span class="s">&quot;feed_url&quot;</span><span class="p">:</span> <span class="s">&quot;http://bbc.com/rss&quot;</span><span class="p">},</span>
<span class="gp">... </span>                <span class="p">{</span><span class="s">&quot;feed_url&quot;</span><span class="p">:</span> <span class="s">&quot;http://xkcd.com/rss&quot;</span><span class="p">}])</span>
</pre></div>
</div>
<div class="highlight-python"><div class="highlight"><pre><span class="gp">&gt;&gt;&gt; </span><span class="n">taskset_id</span><span class="p">,</span> <span class="n">subtask_ids</span> <span class="o">=</span> <span class="n">taskset</span><span class="o">.</span><span class="n">run</span><span class="p">()</span>
</pre></div>
</div>
</blockquote>
<dl class="method">
<dt id="celery.task.TaskSet.iterate">
<tt class="descname">iterate</tt><big>(</big><big>)</big><a class="headerlink" href="#celery.task.TaskSet.iterate" title="Permalink to this definition">¶</a></dt>
<dd><p>Iterate over the results returned after calling <tt class="docutils literal"><span class="pre">run()</span></tt>.</p>
<p>If any of the tasks raises an exception, the exception will
be reraised by <tt class="docutils literal"><span class="pre">iterate</span></tt>.</p>
</dd></dl>

<dl class="method">
<dt id="celery.task.TaskSet.join">
<tt class="descname">join</tt><big>(</big><em>timeout=None</em><big>)</big><a class="headerlink" href="#celery.task.TaskSet.join" title="Permalink to this definition">¶</a></dt>
<dd><p>Gather the results for all of the tasks in the taskset,
and return a list with them ordered by the order of which they
were called.</p>
<p>If any of the tasks raises an exception, the exception
will be reraised by <tt class="docutils literal"><span class="pre">join</span></tt>.</p>
<p>If <tt class="docutils literal"><span class="pre">timeout</span></tt> is not <tt class="xref docutils literal"><span class="pre">None</span></tt> and the operation takes
longer than <tt class="docutils literal"><span class="pre">timeout</span></tt> seconds, it will raise
the <a title="celery.timer.TimeoutError" class="reference external" href="celery.timer.html#celery.timer.TimeoutError"><tt class="xref docutils literal"><span class="pre">celery.timer.TimeoutError</span></tt></a> exception.</p>
</dd></dl>

<dl class="classmethod">
<dt id="celery.task.TaskSet.map">
<em class="property">
classmethod </em><tt class="descname">map</tt><big>(</big><em>func</em>, <em>args</em>, <em>timeout=None</em><big>)</big><a class="headerlink" href="#celery.task.TaskSet.map" title="Permalink to this definition">¶</a></dt>
<dd>Distribute processing of the arguments and collect the results.</dd></dl>

<dl class="classmethod">
<dt id="celery.task.TaskSet.map_async">
<em class="property">
classmethod </em><tt class="descname">map_async</tt><big>(</big><em>func</em>, <em>args</em>, <em>timeout=None</em><big>)</big><a class="headerlink" href="#celery.task.TaskSet.map_async" title="Permalink to this definition">¶</a></dt>
<dd><p>Distribute processing of the arguments and collect the results
asynchronously.</p>
<p>Returns <a title="celery.result.AsyncResult" class="reference external" href="celery.result.html#celery.result.AsyncResult"><tt class="xref docutils literal"><span class="pre">celery.result.AsyncResult</span></tt></a> instance.</p>
</dd></dl>

<dl class="classmethod">
<dt id="celery.task.TaskSet.remote_execute">
<em class="property">
classmethod </em><tt class="descname">remote_execute</tt><big>(</big><em>func</em>, <em>args</em><big>)</big><a class="headerlink" href="#celery.task.TaskSet.remote_execute" title="Permalink to this definition">¶</a></dt>
<dd>Apply <tt class="docutils literal"><span class="pre">args</span></tt> to function by distributing the args to the
celery server(s).</dd></dl>

<dl class="method">
<dt id="celery.task.TaskSet.run">
<tt class="descname">run</tt><big>(</big><big>)</big><a class="headerlink" href="#celery.task.TaskSet.run" title="Permalink to this definition">¶</a></dt>
<dd><p>Run all tasks in the taskset.</p>
<p>Returns a tuple with the taskset id, and a list of subtask id&#8217;s.</p>
<div class="highlight-python"><div class="highlight"><pre><span class="gp">&gt;&gt;&gt; </span><span class="n">ts</span> <span class="o">=</span> <span class="n">RefreshFeeds</span><span class="p">([</span>
<span class="gp">... </span>        <span class="p">[</span><span class="s">&quot;http://foo.com/rss&quot;</span><span class="p">,</span> <span class="p">{}],</span>
<span class="gp">... </span>        <span class="p">[</span><span class="s">&quot;http://bar.com/rss&quot;</span><span class="p">,</span> <span class="p">{}],</span>
<span class="gp">... </span><span class="p">)</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">taskset_id</span><span class="p">,</span> <span class="n">subtask_ids</span> <span class="o">=</span> <span class="n">ts</span><span class="o">.</span><span class="n">run</span><span class="p">()</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">taskset_id</span>
<span class="go">&quot;d2c9b261-8eff-4bfb-8459-1e1b72063514&quot;</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">subtask_ids</span>
<span class="go">[&quot;b4996460-d959-49c8-aeb9-39c530dcde25&quot;,</span>
<span class="go">&quot;598d2d18-ab86-45ca-8b4f-0779f5d6a3cb&quot;]</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">time</span><span class="o">.</span><span class="n">sleep</span><span class="p">(</span><span class="mf">10</span><span class="p">)</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">is_done</span><span class="p">(</span><span class="n">taskset_id</span><span class="p">)</span>
<span class="go">True</span>
</pre></div>
</div>
</dd></dl>

</dd></dl>

<dl class="function">
<dt id="celery.task.delay_task">
<tt class="descclassname">celery.task.</tt><tt class="descname">delay_task</tt><big>(</big><em>task_name</em>, <em>*args</em>, <em>**kwargs</em><big>)</big><a class="headerlink" href="#celery.task.delay_task" title="Permalink to this definition">¶</a></dt>
<dd><p>Delay a task for execution by the <tt class="docutils literal"><span class="pre">celery</span></tt> daemon.</p>
<div class="highlight-python"><div class="highlight"><pre><span class="gp">&gt;&gt;&gt; </span><span class="n">delay_task</span><span class="p">(</span><span class="s">&quot;update_record&quot;</span><span class="p">,</span> <span class="n">name</span><span class="o">=</span><span class="s">&quot;George Constanza&quot;</span><span class="p">,</span> <span class="n">age</span><span class="o">=</span><span class="mf">32</span><span class="p">)</span>
</pre></div>
</div>
</dd></dl>

<dl class="function">
<dt id="celery.task.discard_all">
<tt class="descclassname">celery.task.</tt><tt class="descname">discard_all</tt><big>(</big><big>)</big><a class="headerlink" href="#celery.task.discard_all" title="Permalink to this definition">¶</a></dt>
<dd><p>Discard all waiting tasks.</p>
<p>This will ignore all tasks waiting for execution, and they will
be deleted from the messaging server.</p>
<p>Returns the number of tasks discarded.</p>
</dd></dl>

<dl class="function">
<dt id="celery.task.dmap">
<tt class="descclassname">celery.task.</tt><tt class="descname">dmap</tt><big>(</big><em>func</em>, <em>args</em>, <em>timeout=None</em><big>)</big><a class="headerlink" href="#celery.task.dmap" title="Permalink to this definition">¶</a></dt>
<dd><p>Distribute processing of the arguments and collect the results.</p>
<div class="highlight-python"><div class="highlight"><pre><span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">celery.task</span> <span class="kn">import</span> <span class="nb">map</span>
<span class="gp">&gt;&gt;&gt; </span><span class="kn">import</span> <span class="nn">operator</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">dmap</span><span class="p">(</span><span class="n">operator</span><span class="o">.</span><span class="n">add</span><span class="p">,</span> <span class="p">[[</span><span class="mf">2</span><span class="p">,</span> <span class="mf">2</span><span class="p">],</span> <span class="p">[</span><span class="mf">4</span><span class="p">,</span> <span class="mf">4</span><span class="p">],</span> <span class="p">[</span><span class="mf">8</span><span class="p">,</span> <span class="mf">8</span><span class="p">]])</span>
<span class="go">[4, 8, 16]</span>
</pre></div>
</div>
</dd></dl>

<dl class="function">
<dt id="celery.task.dmap_async">
<tt class="descclassname">celery.task.</tt><tt class="descname">dmap_async</tt><big>(</big><em>func</em>, <em>args</em>, <em>timeout=None</em><big>)</big><a class="headerlink" href="#celery.task.dmap_async" title="Permalink to this definition">¶</a></dt>
<dd><p>Distribute processing of the arguments and collect the results
asynchronously.</p>
<p>Returns a <a title="celery.result.AsyncResult" class="reference external" href="celery.result.html#celery.result.AsyncResult"><tt class="xref docutils literal"><span class="pre">celery.result.AsyncResult</span></tt></a> object.</p>
<div class="highlight-python"><div class="highlight"><pre><span class="gp">&gt;&gt;&gt; </span><span class="kn">from</span> <span class="nn">celery.task</span> <span class="kn">import</span> <span class="n">dmap_async</span>
<span class="gp">&gt;&gt;&gt; </span><span class="kn">import</span> <span class="nn">operator</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">presult</span> <span class="o">=</span> <span class="n">dmap_async</span><span class="p">(</span><span class="n">operator</span><span class="o">.</span><span class="n">add</span><span class="p">,</span> <span class="p">[[</span><span class="mf">2</span><span class="p">,</span> <span class="mf">2</span><span class="p">],</span> <span class="p">[</span><span class="mf">4</span><span class="p">,</span> <span class="mf">4</span><span class="p">],</span> <span class="p">[</span><span class="mf">8</span><span class="p">,</span> <span class="mf">8</span><span class="p">]])</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">presult</span>
<span class="go">&lt;AsyncResult: 373550e8-b9a0-4666-bc61-ace01fa4f91d&gt;</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">presult</span><span class="o">.</span><span class="n">status</span>
<span class="go">&#39;DONE&#39;</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">presult</span><span class="o">.</span><span class="n">result</span>
<span class="go">[4, 8, 16]</span>
</pre></div>
</div>
</dd></dl>

<dl class="function">
<dt id="celery.task.execute_remote">
<tt class="descclassname">celery.task.</tt><tt class="descname">execute_remote</tt><big>(</big><em>func</em>, <em>*args</em>, <em>**kwargs</em><big>)</big><a class="headerlink" href="#celery.task.execute_remote" title="Permalink to this definition">¶</a></dt>
<dd><p>Execute arbitrary function/object remotely.</p>
<p>The object must be picklable, so you can&#8217;t use lambdas or functions
defined in the REPL (the objects must have an associated module).</p>
</dd></dl>

<dl class="function">
<dt id="celery.task.is_done">
<tt class="descclassname">celery.task.</tt><tt class="descname">is_done</tt><big>(</big><em>task_id</em><big>)</big><a class="headerlink" href="#celery.task.is_done" title="Permalink to this definition">¶</a></dt>
<dd>Returns <tt class="xref docutils literal"><span class="pre">True</span></tt> if task with <tt class="docutils literal"><span class="pre">task_id</span></tt> has been executed.</dd></dl>

<dl class="function">
<dt id="celery.task.mark_as_done">
<tt class="descclassname">celery.task.</tt><tt class="descname">mark_as_done</tt><big>(</big><em>task_id</em>, <em>result</em><big>)</big><a class="headerlink" href="#celery.task.mark_as_done" title="Permalink to this definition">¶</a></dt>
<dd>Mark task as done (executed).</dd></dl>

<dl class="function">
<dt id="celery.task.mark_as_failure">
<tt class="descclassname">celery.task.</tt><tt class="descname">mark_as_failure</tt><big>(</big><em>task_id</em>, <em>exc</em><big>)</big><a class="headerlink" href="#celery.task.mark_as_failure" title="Permalink to this definition">¶</a></dt>
<dd>Mark task as done (executed).</dd></dl>

</div>


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