dd>Integer, index of epoch.</dd>
<dt><strong><code>logs</code></strong></dt>
<dd>Dict, metric results for this training epoch, and for the
validation epoch if validation is performed. Validation result
keys are prefixed with <code>val_</code>. For training epoch, the values of
the <code>Model</code>'s metrics are returned. Example:
<code>{'loss': 0.2, 'accuracy': 0.7}</code>.</dd>
</dl></div>
<details class="source">
<summary>
<span>Expand source code</span>
</summary>
<pre><code class="python">def on_epoch