n">arange</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">n_symbs</span><span class="p">),</span> <span class="p">(</span><span class="nb">len</span><span class="p">(</span><span class="n">xyz</span><span class="p">),</span> <span class="mi">1</span><span class="p">))</span>

        <span class="c1"># High-dimensional contingency table</span>
        <span class="n">_</span><span class="p">,</span> <span class="n">hist</span> <span class="o">=</span> <span 