class="n">validation_dataset</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">test_dataset</span> <span class="o">=</span> <span class="kc">None</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">current_epoch</span> <span class="o">=</span> <span class="mi">0</span>

        <span class="c1"># Prepare model</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">prepare_model</span><span class="p">