nam">loss</span>&nbsp;</span><span class="r"></span></p>
    <p class="pln"><span class="n"><a id="t53" href="#t53">53</a></span><span class="t">&nbsp;</span><span class="r"></span></p>
    <p class="run"><span class="n"><a id="t54" href="#t54">54</a></span><span class="t"><span class="key">class</span> <span class="nam">KLDivLoss</span><span class="op">(</span><span class="nam">AbsLoss</span><span class="op">)</span><span class="op">:</span>&nbsp;</span><span class="r"></span></p>
    <p class="pln"><span 