tr">    """</span>&nbsp;</span><span class="r"></span></p>
    <p class="mis show_mis"><span class="n"><a id="t60" href="#t60">60</a></span><span class="t">    <span class="nam">old_dir</span> <span class="op">=</span> <span class="nam">os</span><span class="op">.</span><span class="nam">getcwd</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="t61" href="#t61">61</a></span><span class="t">    <span class="nam">