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<h4 id="DataBunch.one_item" class="doc_header"><code>one_item</code><a href="https://github.com/fastai/fastai/blob/master/fastai/basic_data.py#L177" class="source_link" style="float:right">[source]</a><a class="source_link" data-toggle="collapse" data-target="#DataBunch-one_item-pytest" style="float:right; padding-right:10px">[test]</a></h4><blockquote><p><code>one_item</code>(<strong><code>item</code></strong>, <strong><code>detach</code></strong>:<code>bool</code>=<stron