</span><span class="si">{size}</span><span class="s2">.</span>
<span class="s2">                    See `widgets.image_downloader._img_sizes` for supported sizes.&quot;&quot;&quot;</span><span class="p">)</span> 
    <span class="k">if</span> <span class="nb">format</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">_fmts</span><span class="p">:</span> 
        <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">(</span><span class="sa">f</span><span c