.. _no-self-use:

no-self-use / R6301
===================

**Message emitted:**

``Method could be a function``

**Description:**

*Used when a method doesn't use its bound instance, and so could be written as a function.*

**Problematic code:**

.. literalinclude:: /data/messages/n/no-self-use/bad.py
   :language: python

**Correct code:**

``function.py``:

.. literalinclude:: /data/messages/n/no-self-use/good/function.py
    :language: python


``staticmethod.py``:

.. literalinclude:: /data/messages/n/no-self-use/good/staticmethod.py
    :language: python


``use_self.py``:

.. literalinclude:: /data/messages/n/no-self-use/good/use_self.py
    :language: python


**Configuration file:**

.. literalinclude:: /data/messages/n/no-self-use/pylintrc
    :language: ini

**Additional details:**

If a function is not using any class attribute it can be a ``@staticmethod``,
or a function outside the class.




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

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