class="op">.</span><span class="nam">n</span> <span class="op">=</span> <span class="num">0</span>&nbsp;</span><span class="r"></span></p>
    <p class="pln"><span class="n"><a id="t41" href="#t41">41</a></span><span class="t">&nbsp;</span><span class="r"></span></p>
    <p class="run"><span class="n"><a id="t42" href="#t42">42</a></span><span class="t">    <span class="key">def</span> <span class="nam">readline</span><span class="op">(</span><span class="nam">self</span><span class="op">)</span><span class