n><span class="p">[</span><span class="nb">format</span><span class="p">]</span>
</pre></div>

    </div>
</div>
</div>

</div>
    {% endraw %}

    {% raw %}
    
<div class="cell border-box-sizing code_cell rendered">

<div class="output_wrapper">
<div class="output">

<div class="output_area">


<div class="output_markdown rendered_html output_subarea ">
<h2 id="ImageDownloader" class="doc_header"><code>class</code> <code>ImageDownloader</code><a href="https://github.com/lewtun/dslectures/tree/master/ds