ences</span><span class="p">(</span>
    <span class="n">sequences</span><span class="p">:</span> <span class="n">List</span><span class="p">[</span><span class="n">List</span><span class="p">[</span><span class="n">Union</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">int</span><span class="p">]]],</span>
    <span class="n">padding_length</span><span class="p">:</span> <span class="nb">int</span><span class="p">,</span>
    <span class="n">padding_value</