code></a> for validation, training, or test (<code>ds_type</code>).</p>

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<h4 id="DataBunch.one_batch" class="doc_header"><code>one_batch</code><a href="https://github.com/fastai/fastai/blob/master/fastai/basic_data.py#L163" class="source_link" style="float:right">[source]</a><a