.. _duplicate-value:

duplicate-value / W0130
=======================

**Message emitted:**

``Duplicate value %r in set``

**Description:**

*This message is emitted when a set contains the same value two or more times.*

**Problematic code:**

.. literalinclude:: /data/messages/d/duplicate-value/bad.py
   :language: python

**Correct code:**

.. literalinclude:: /data/messages/d/duplicate-value/good.py
   :language: python





Created by the `basic <https://github.com/pylint-dev/pylint/blob/main/pylint/checkers/base/basic_checker.py>`__ checker.