span><span class="p">,</span><span class="n">Callable</span><span class="p">[[</span><span class="nb">str</span><span class="p">],</span><span class="nb">bool</span><span class="p">]]</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span>
<span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">str</span><span class="p">:</span>
<span class="w">    </span><span class="sd">"""Recursively gzip all files in given directory.</span>
<span class="sd">    The generated .ta