an class="kc">True</span><span class="p">)</span>
    <span class="n">generator</span><span class="o">.</span><span class="n">load_backend</span><span class="p">(</span><span class="s1">'azure'</span><span class="p">,</span> <span class="n">install_python_package</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>

    <span class="nb">print</span><span class="p">(</span><span class="s1">'Listing voices ...'</span><span class="p">)</span>
    <span class="n">voices</span> <spa