 class="bp">self</span><span class="p">,</span> <span class="n">chance_probabilities</span><span class="o">=</span><span class="s2">&quot;must_100%&quot;</span><span class="p">):</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">data</span> <span class="o">=</span> <span class="p">{}</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_chance_probabilities</span> <span class="o">=</span> <span class="n">chance_probabilities</span>
        <span