via string&quot;&quot;&quot;</span>
    <span class="n">dest</span> <span class="o">=</span> <span class="n">tmp_path</span> <span class="o">/</span> <span class="s2">&quot;app_custom_external.py&quot;</span>

    <span class="n">StreamlitAppCustom</span><span class="p">()</span><span class="o">.</span><span class="n">render</span><span class="p">(</span>
        <span class="s2">&quot;Custom App&quot;</span><span class="p">,</span> <span class="s2">&quot;Jeff&quot;</span><span class="p">,</span> <span clas