span class="k">return</span> <span class="nb">next</span><span class="p">(</span><span class="n">params</span><span class="o">.</span><span class="fm">__iter__</span><span class="p">(),</span> <span class="kc">None</span><span class="p">)</span>
</span><span id="L-13"><a href="#L-13"><span class="linenos">13</span></a>
</span><span id="L-14"><a href="#L-14"><span class="linenos">14</span></a>
</span><span id="L-15"><a href="#L-15"><span class="linenos">15</span></a><span class="k">def</span><span class="w">