.. _access-member-before-definition:

access-member-before-definition / E0203
=======================================

**Message emitted:**

Access to member %r before its definition line %s

**Description:**

*Used when an instance member is accessed before it's actually assigned.*


**Correct code:**

.. code-block:: python

  class Foo:
      def __init__(self, param):
          self.param = param
          if self.param:
              pass


**Problematic code:**

.. code-block:: python

  class Foo:
      def __init__(self, param):
          if self.param:  # [access-member-before-definition]
              pass
          self.param = param




Created by ``classes`` checker