ass="op">:</span>&nbsp;</span><span class="r"></span></p>
    <p class="pln"><span class="n"><a id="t54" href="#t54">54</a></span><span class="t">    <span class="str">"""Change directory, and then change back.</span>&nbsp;</span><span class="r"></span></p>
    <p class="pln"><span class="n"><a id="t55" href="#t55">55</a></span><span class="t">&nbsp;</span><span class="r"></span></p>
    <p class="pln"><span class="n"><a id="t56" href="#t56">56</a></span><span class="t"><span class="str">    Use as a contex