.. _redundant-typehint-argument:

redundant-typehint-argument / R6006
===================================

**Message emitted:**

``Type `%s` is used more than once in union type annotation. Remove redundant typehints.``

**Description:**

*Duplicated type arguments will be skipped by `mypy` tool, therefore should be removed to avoid confusion.*

**Problematic code:**

.. literalinclude:: /data/messages/r/redundant-typehint-argument/bad.py
   :language: python

**Correct code:**

.. literalinclude:: /data/messages/r/redundant-typehint-argument/good.py
   :language: python

**Configuration file:**

.. literalinclude:: /data/messages/r/redundant-typehint-argument/pylintrc
    :language: ini





.. note::
  This message is emitted by the optional :ref:`'typing'<pylint.extensions.typing>`
  checker, which requires the ``pylint.extensions.typing`` plugin to be loaded.

Created by the `typing <https://github.com/pylint-dev/pylint/blob/main/pylint/extensions/typing.py>`__ checker.