/span> <span class="n">height</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">area</span> <span class="o">=</span> <span class="n">width</span> <span class="o">*</span> <span class="n">height</span>
        <span class="c1"># causes &quot;Explicit return in __init__&quot; error</span>
        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">area</span>
</pre></div>
</div>
</div>
<div class="section" id="best-practices">
<h2>