os</span><span class="op">.</span><span class="nam">chdir</span><span class="op">(</span><span class="nam">str</span><span class="op">(</span><span class="nam">new_dir</span><span class="op">)</span><span class="op">)</span>&nbsp;</span><span class="r"></span></p>
    <p class="mis show_mis"><span class="n"><a id="t62" href="#t62">62</a></span><span class="t">    <span class="key">try</span><span class="op">:</span>&nbsp;</span><span class="r"></span></p>
    <p class="mis show_mis"><span class="n"><a id="t