<li><strong>input</strong> (<em>tuple|list|None</em>) – The input tensor that contains complete
lod information needed to construct the output.</li>
<li><strong>mask</strong> (<em>list</em>) – A bool column vector which masks the input.</li>
<li><strong>level</strong> (<em>int</em>) – The specific lod level to rank.</li>
</ul>
</td>
</tr>
<trclass="field-even field"><thclass="field-name">Returns:</th><tdclass="field-body"><pclass="first">The true branch of tensor as per the mask applied to input.
Variable: The false branch of tensor as per the mask applied to input.</p>
<li><strong>input</strong> (<em>tuple|list|None</em>) – The input tensor that contains complete
lod information needed to construct the output.</li>
<li><strong>mask</strong> (<em>list</em>) – A bool column vector which masks the input.</li>
<li><strong>level</strong> (<em>int</em>) – The specific lod level to rank.</li>
</ul>
</td>
</tr>
<trclass="field-even field"><thclass="field-name">返回:</th><tdclass="field-body"><pclass="first">The true branch of tensor as per the mask applied to input.
Variable: The false branch of tensor as per the mask applied to input.</p>