<span class="bp">self</span><span class="o">.</span><span class="n">message</span> <span class="o">=</span> <span class="s2">"Batch items returned by the data loader expected format: </span><span class="se">\n</span><span class="s2">"</span> \
<span class="s2">"1. torch.Tensor or tuple, s.t inputs = batch_items[0], targets = batch_items[1] and len("</span> \