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---
title: get_num_classes
description: API reference for qiskit.aqua.utils.get_num_classes
in_page_toc_min_heading_level: 1
python_api_type: function
python_api_name: qiskit.aqua.utils.get_num_classes
---
# qiskit.aqua.utils.get\_num\_classes
<Function id="qiskit.aqua.utils.get_num_classes" isDedicatedPage={true} github="https://github.com/qiskit-community/qiskit-aqua/tree/stable/0.9/qiskit/aqua/utils/dataset_helper.py" signature="get_num_classes(dataset)">
Check number of classes in a given dataset
**Parameters**
**dataset** (*dict*) key is the class name and value is the data.
**Returns**
number of classes
**Return type**
int
</Function>