nf">list_valid_filenames_in_directory</span><span class="p">(</span>
    <span class="n">base_directory</span><span class="p">:</span><span class="nb">str</span><span class="p">,</span>
    <span class="n">search_class</span><span class="p">:</span><span class="nb">str</span><span class="p">,</span>
    <span class="n">white_list_formats</span><span class="p">:</span><span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span><span class="o">=</span><span class="kc"