lass="n">get</span><span class="p">(</span><span class="s1">&#39;sourceOutputIndex&#39;</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span> <span class="k">else</span> <span class="kc">None</span><span class="p">,</span>
            <span class="n">destination_input_index</span><span class="o">=</span><span class="nb">float</span><span class="p">(</span><span class="n">json</span><span class="