.. _unnecessary-lambda:

unnecessary-lambda / W0108
==========================

**Message emitted:**

``Lambda may not be necessary``

**Description:**

*Used when the body of a lambda expression is a function call on the same argument list as the lambda itself; such lambda expressions are in all but a few cases replaceable with the function being called in the body of the lambda.*

**Problematic code:**

``pandas.py``:

.. literalinclude:: /data/messages/u/unnecessary-lambda/bad/pandas.py
    :language: python


``print.py``:

.. literalinclude:: /data/messages/u/unnecessary-lambda/bad/print.py
    :language: python


**Correct code:**

``pandas.py``:

.. literalinclude:: /data/messages/u/unnecessary-lambda/good/pandas.py
    :language: python


``print.py``:

.. literalinclude:: /data/messages/u/unnecessary-lambda/good/print.py
    :language: python






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