diff --git a/pyflakes/checker.py b/pyflakes/checker.py
index e927715..4d778a8 100644
--- a/pyflakes/checker.py
+++ b/pyflakes/checker.py
@@ -263,6 +263,11 @@ class Definition(Binding):
     """
     A binding that defines a function or a class.
     """
+    def redefines(self, other):
+        return (
+            super().redefines(other) or
+            (isinstance(other, Assignment) and self.name == other.name)
+        )
 
 
 class Builtin(Definition):

diff --git a/pyflakes/test/test_other.py b/pyflakes/test/test_other.py
index 42e99ae..aebdcea 100644
--- a/pyflakes/test/test_other.py
+++ b/pyflakes/test/test_other.py
@@ -118,6 +118,12 @@ class Test(TestCase):
         def a(): pass
         ''', m.RedefinedWhileUnused)
 
+    def test_redefined_function_shadows_variable(self):
+        self.flakes('''
+        x = 1
+        def x(): pass
+        ''', m.RedefinedWhileUnused)
+
     def test_redefinedUnderscoreFunction(self):
         """
         Test that shadowing a function definition named with underscore doesn't

should produce error for attribute hidden by a method
# How to reproduce

```
$ flake8 --version
6.0.0 (mccabe: 0.7.0, pycodestyle: 2.10.0, pyflakes: 3.0.1) CPython 3.11.1 on Linux
$ flake8 ok.py
ok.py:5:5: F811 redefinition of unused 'bar' from line 2
$ flake8 fail.py
```

## `ok.py`

```python
class Foo:
    def bar(self):
        return 0

    def bar(self):
        return 1
```

## `fail.py`

```python
class Foo:
    bar = 0

    def bar(self):
        return 1
```

# Reasons

I do understand that redefinition of variables is a useful pattern, for example [`structlog` Bound Loggers](https://www.structlog.org/en/stable/bound-loggers.html) uses it extensively.

```python
log = structlog.get_logger()
log = log.bind(user=user)
log = log.bind(time=now())
log.info('hello world')
```

## Problems

I spent some time debugging a problem in our code base related to [Factory Boy Lazy Attributes](https://factoryboy.readthedocs.io/en/stable/#lazy-attributes).

```python
class UserFactory(Factory):
    class Meta:
        model = User

    name = 'joe'
    email = LazyAttribute(lambda user: f'{user.name}@example.com')

    # A 1000 lines later

    @post_generation
    def email(self):
        return 'fake@stub.io'
```

## Proposal

Deny attribute redefinition inside class body.

Thoughts?
pyflakes/test/test_other.py::Test::test_redefined_function_shadows_variable
pyflakes/test/test_other.py::Test::test_attrAugmentedAssignment pyflakes/test/test_other.py::Test::test_breakInsideLoop pyflakes/test/test_other.py::Test::test_breakOutsideLoop pyflakes/test/test_other.py::Test::test_classFunctionDecorator pyflakes/test/test_other.py::Test::test_classNameDefinedPreviously pyflakes/test/test_other.py::Test::test_classNameUndefinedInClassBody pyflakes/test/test_other.py::Test::test_classRedefinedAsFunction pyflakes/test/test_other.py::Test::test_classRedefinition pyflakes/test/test_other.py::Test::test_classWithReturn pyflakes/test/test_other.py::Test::test_classWithYield pyflakes/test/test_other.py::Test::test_classWithYieldFrom pyflakes/test/test_other.py::Test::test_comparison pyflakes/test/test_other.py::Test::test_containment pyflakes/test/test_other.py::Test::test_continueInsideLoop pyflakes/test/test_other.py::Test::test_continueOutsideLoop pyflakes/test/test_other.py::Test::test_defaultExceptLast pyflakes/test/test_other.py::Test::test_defaultExceptNotLast pyflakes/test/test_other.py::Test::test_doubleAssignmentConditionally pyflakes/test/test_other.py::Test::test_doubleAssignmentWithUse pyflakes/test/test_other.py::Test::test_duplicateArgs pyflakes/test/test_other.py::Test::test_ellipsis pyflakes/test/test_other.py::Test::test_extendedSlice pyflakes/test/test_other.py::Test::test_functionDecorator pyflakes/test/test_other.py::Test::test_functionRedefinedAsClass pyflakes/test/test_other.py::Test::test_function_arguments pyflakes/test/test_other.py::Test::test_function_arguments_python3 pyflakes/test/test_other.py::Test::test_globalDeclaredInDifferentScope pyflakes/test/test_other.py::Test::test_identity pyflakes/test/test_other.py::Test::test_localReferencedBeforeAssignment pyflakes/test/test_other.py::Test::test_loopControl pyflakes/test/test_other.py::Test::test_modernProperty pyflakes/test/test_other.py::Test::test_moduleWithReturn pyflakes/test/test_other.py::Test::test_moduleWithYield pyflakes/test/test_other.py::Test::test_moduleWithYieldFrom pyflakes/test/test_other.py::Test::test_redefinedClassFunction pyflakes/test/test_other.py::Test::test_redefinedFunction pyflakes/test/test_other.py::Test::test_redefinedIfElseFunction pyflakes/test/test_other.py::Test::test_redefinedIfElseInListComp pyflakes/test/test_other.py::Test::test_redefinedIfFunction pyflakes/test/test_other.py::Test::test_redefinedInDictComprehension pyflakes/test/test_other.py::Test::test_redefinedInGenerator pyflakes/test/test_other.py::Test::test_redefinedInSetComprehension pyflakes/test/test_other.py::Test::test_redefinedTryExceptFunction pyflakes/test/test_other.py::Test::test_redefinedTryFunction pyflakes/test/test_other.py::Test::test_redefinedUnderscoreFunction pyflakes/test/test_other.py::Test::test_redefinedUnderscoreImportation pyflakes/test/test_other.py::Test::test_starredAssignmentErrors pyflakes/test/test_other.py::Test::test_starredAssignmentNoError pyflakes/test/test_other.py::Test::test_unaryPlus pyflakes/test/test_other.py::Test::test_undefinedBaseClass pyflakes/test/test_other.py::Test::test_varAugmentedAssignment pyflakes/test/test_other.py::TestUnusedAssignment::test_assert_static pyflakes/test/test_other.py::TestUnusedAssignment::test_assert_tuple pyflakes/test/test_other.py::TestUnusedAssignment::test_assert_tuple_empty pyflakes/test/test_other.py::TestUnusedAssignment::test_assert_with_message pyflakes/test/test_other.py::TestUnusedAssignment::test_assert_without_message pyflakes/test/test_other.py::TestUnusedAssignment::test_assignInForLoop pyflakes/test/test_other.py::TestUnusedAssignment::test_assignInListComprehension pyflakes/test/test_other.py::TestUnusedAssignment::test_assignToGlobal pyflakes/test/test_other.py::TestUnusedAssignment::test_assignToMember pyflakes/test/test_other.py::TestUnusedAssignment::test_assignToNonlocal pyflakes/test/test_other.py::TestUnusedAssignment::test_assign_expr pyflakes/test/test_other.py::TestUnusedAssignment::test_assign_expr_generator_scope pyflakes/test/test_other.py::TestUnusedAssignment::test_assign_expr_nested pyflakes/test/test_other.py::TestUnusedAssignment::test_assignmentInsideLoop pyflakes/test/test_other.py::TestUnusedAssignment::test_augmentedAssignmentImportedFunctionCall pyflakes/test/test_other.py::TestUnusedAssignment::test_closedOver pyflakes/test/test_other.py::TestUnusedAssignment::test_dictComprehension pyflakes/test/test_other.py::TestUnusedAssignment::test_doubleClosedOver pyflakes/test/test_other.py::TestUnusedAssignment::test_exceptWithoutNameInFunction pyflakes/test/test_other.py::TestUnusedAssignment::test_exceptWithoutNameInFunctionTuple pyflakes/test/test_other.py::TestUnusedAssignment::test_exceptionUnusedInExcept pyflakes/test/test_other.py::TestUnusedAssignment::test_exceptionUnusedInExceptInFunction pyflakes/test/test_other.py::TestUnusedAssignment::test_exceptionUsedInExcept pyflakes/test/test_other.py::TestUnusedAssignment::test_f_string pyflakes/test/test_other.py::TestUnusedAssignment::test_generatorExpression pyflakes/test/test_other.py::TestUnusedAssignment::test_if_tuple pyflakes/test/test_other.py::TestUnusedAssignment::test_ifexp pyflakes/test/test_other.py::TestUnusedAssignment::test_listUnpacking pyflakes/test/test_other.py::TestUnusedAssignment::test_setComprehensionAndLiteral pyflakes/test/test_other.py::TestUnusedAssignment::test_tracebackhideSpecialVariable pyflakes/test/test_other.py::TestUnusedAssignment::test_tupleUnpacking pyflakes/test/test_other.py::TestUnusedAssignment::test_unusedUnderscoreVariable pyflakes/test/test_other.py::TestUnusedAssignment::test_unusedVariable pyflakes/test/test_other.py::TestUnusedAssignment::test_unusedVariableAsLocals pyflakes/test/test_other.py::TestUnusedAssignment::test_unusedVariableNoLocals pyflakes/test/test_other.py::TestUnusedAssignment::test_variableUsedInLoop pyflakes/test/test_other.py::TestUnusedAssignment::test_withStatementAttributeName pyflakes/test/test_other.py::TestUnusedAssignment::test_withStatementComplicatedTarget pyflakes/test/test_other.py::TestUnusedAssignment::test_withStatementListNames pyflakes/test/test_other.py::TestUnusedAssignment::test_withStatementNameDefinedInBody pyflakes/test/test_other.py::TestUnusedAssignment::test_withStatementNoNames pyflakes/test/test_other.py::TestUnusedAssignment::test_withStatementSingleName pyflakes/test/test_other.py::TestUnusedAssignment::test_withStatementSingleNameRedefined pyflakes/test/test_other.py::TestUnusedAssignment::test_withStatementSingleNameUndefined pyflakes/test/test_other.py::TestUnusedAssignment::test_withStatementSubscript pyflakes/test/test_other.py::TestUnusedAssignment::test_withStatementSubscriptUndefined pyflakes/test/test_other.py::TestUnusedAssignment::test_withStatementTupleNames pyflakes/test/test_other.py::TestUnusedAssignment::test_withStatementTupleNamesRedefined pyflakes/test/test_other.py::TestUnusedAssignment::test_withStatementTupleNamesUndefined pyflakes/test/test_other.py::TestUnusedAssignment::test_withStatementUndefinedInExpression pyflakes/test/test_other.py::TestUnusedAssignment::test_withStatementUndefinedInside pyflakes/test/test_other.py::TestUnusedAssignment::test_yieldFromUndefined pyflakes/test/test_other.py::TestStringFormatting::test_f_string_without_placeholders pyflakes/test/test_other.py::TestStringFormatting::test_invalid_dot_format_calls pyflakes/test/test_other.py::TestStringFormatting::test_invalid_percent_format_calls pyflakes/test/test_other.py::TestStringFormatting::test_ok_percent_format_cannot_determine_element_count pyflakes/test/test_other.py::TestAsyncStatements::test_asyncDef pyflakes/test/test_other.py::TestAsyncStatements::test_asyncDefAwait pyflakes/test/test_other.py::TestAsyncStatements::test_asyncDefUndefined pyflakes/test/test_other.py::TestAsyncStatements::test_asyncFor pyflakes/test/test_other.py::TestAsyncStatements::test_asyncForUnderscoreLoopVar pyflakes/test/test_other.py::TestAsyncStatements::test_asyncWith pyflakes/test/test_other.py::TestAsyncStatements::test_asyncWithItem pyflakes/test/test_other.py::TestAsyncStatements::test_formatstring pyflakes/test/test_other.py::TestAsyncStatements::test_loopControlInAsyncFor pyflakes/test/test_other.py::TestAsyncStatements::test_loopControlInAsyncForElse pyflakes/test/test_other.py::TestAsyncStatements::test_matmul pyflakes/test/test_other.py::TestAsyncStatements::test_raise_notimplemented pyflakes/test/test_other.py::TestIncompatiblePrintOperator::test_invalid_print_when_imported_from_future pyflakes/test/test_other.py::TestIncompatiblePrintOperator::test_print_as_condition_test pyflakes/test/test_other.py::TestIncompatiblePrintOperator::test_print_augmented_assign pyflakes/test/test_other.py::TestIncompatiblePrintOperator::test_print_function_assignment pyflakes/test/test_other.py::TestIncompatiblePrintOperator::test_print_in_lambda pyflakes/test/test_other.py::TestIncompatiblePrintOperator::test_print_returned_in_function pyflakes/test/test_other.py::TestIncompatiblePrintOperator::test_valid_print