</span> <span class="n">tf</span><span class="o">.</span><span class="n">io</span><span class="o">.</span><span class="n">FixedLenFeature</span><span class="p">((),</span> <span class="n">tf</span><span class="o">.</span><span class="n">int64</span><span class="p">)</span>
        <span class="k">return</span> <span class="n">feature_desc</span></div>

    <span class="k">def</span> <span class="nf">_read_tfrecord</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span><span class=