s="o">.</span><span class="n">obs</span><span class="p">[</span><span class="s1">&#39;sig&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s1">&#39;other&#39;</span>
<span class="k">for</span> <span class="n">index</span> <span class="ow">in</span> <span class="n">adata</span><span class="o">.</span><span class="n">obs_names</span><span class="p">:</span>
    <span class="n">ligand_sig</span> <span class="o">=</span> <span class="n">ligand_cell_communication</span><span class="o">