.. _declare-non-slot:

declare-non-slot / E0245
========================

**Message emitted:**

``No such name %r in __slots__``

**Description:**

*Raised when a type annotation on a class is absent from the list of names in __slots__, and __slots__ does not contain a __dict__ entry.*

**Problematic code:**

.. literalinclude:: /data/messages/d/declare-non-slot/bad.py
   :language: python

**Correct code:**

.. literalinclude:: /data/messages/d/declare-non-slot/good.py
   :language: python





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