.. _unsupported-assignment-operation:

unsupported-assignment-operation / E1137
========================================

**Message emitted:**

``%r does not support item assignment``

**Description:**

*Emitted when an object does not support item assignment (i.e. doesn't define __setitem__ method).*

**Problematic code:**

.. literalinclude:: /data/messages/u/unsupported-assignment-operation/bad.py
   :language: python

**Correct code:**

.. literalinclude:: /data/messages/u/unsupported-assignment-operation/good.py
   :language: python





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