class="c1">#</span>
        <span class="n">probabilities</span> <span class="o">=</span> <span class="p">[</span><span class="n">prob</span> <span class="k">for</span> <span class="n">_</span><span class="p">,</span> <span class="n">prob</span><span class="p">,</span> <span class="n">_</span><span class="p">,</span> <span class="n">_</span> <span class="ow">in</span> <span class="n">branches</span><span class="p">]</span>

        <span class="k">if</span> <span class="bp">self</span><span class="o">.</spa