.. _unused-format-string-argument:

unused-format-string-argument / W1304
=====================================

**Message emitted:**

``Unused format argument %r``

**Description:**

*Used when a PEP 3101 format string that uses named fields is used with an argument that is not required by the format string.*

**Problematic code:**

.. literalinclude:: /data/messages/u/unused-format-string-argument/bad.py
   :language: python

**Correct code:**

``add_format_target.py``:

.. literalinclude:: /data/messages/u/unused-format-string-argument/good/add_format_target.py
    :language: python


``remove_unused_args.py``:

.. literalinclude:: /data/messages/u/unused-format-string-argument/good/remove_unused_args.py
    :language: python






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