pan class="o">=</span> <span class="n">ListManager</span><span class="p">(</span><span class="n">value</span> <span class="o">=</span> <span class="n">initial_list</span><span class="p">,</span> <span class="n">list_text</span><span class="o">=</span><span class="s1">&#39;Element..&#39;</span><span class="p">,</span> <span class="n">button_text</span><span class="o">=</span><span class="s1">&#39;&#39;</span><span class="p">,</span> <span class="n">cb</span><span class="o">=</span><span class="n">LMCB</span>