span> <span class="kc">None</span> <span class="k">for</span> <span class="n">arg</span> <span class="ow">in</span> <span class="n">exposure_args</span><span class="p">])</span> <span class="o">&gt;</span> <span class="mi">1</span><span class="p">:</span>
            <span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s2">&quot;Only one exposure argument can be specified at a time.&quot;</span><span class="p">)</span>

        <span class="n">request</span> <s