 used in <code>feature_columns</code>.</p></li>
<li><p>ValueError: If any of the given <code>feature_columns</code> is not a <code>_FeatureColumn</code> instance.</p></li>
<li><p>ValueError: If <code>weight_column</code> is not a <code>_NumericColumn</code> instance.</p></li>
<li><p>ValueError: if label_key is <code>NULL</code>.</p></li>
</ul>
    
    <h2 class="hasAnchor" id="see-also"><a class="anchor" href="#see-also"></a>See also</h2>

    <p>Other parsing utilities: <code><a href='classifier_parse_exa