><span class="o">=</span><span class="kc">None</span><span class="p">):</span>
    <span class="sd">&quot;&quot;&quot;</span>

<span class="sd">    Create index mapping table between sequence positions</span>
<span class="sd">    based on a sequence alignment.</span>

<span class="sd">    Parameters</span>
<span class="sd">    ----------</span>
<span class="sd">    alignment_file : str</span>
<span class="sd">        Path of alignment file containing sequences for</span>
<span class="sd">        which indic