fix

pyflakes/checker.py

@@ -568,16 +568,15 @@ def __init__(self):
         self.returnValue = None     # First non-empty return
         self.isGenerator = False    # Detect a generator
 
-    def unusedAssignments(self):
+    def unusedBindings(self):
         """
         Return a generator for the assignments which have not been used.
         """
         for name, binding in self.items():
             if (not binding.used and
                     name != '_' and  # see issue #202
                     name not in self.globals and
-                    not self.usesLocals and
-                    isinstance(binding, Assignment)):
+                    not self.usesLocals):
                 yield name, binding
 
 
@@ -1839,13 +1838,18 @@ def runFunction():
 
             self.handleChildren(node, omit=['decorator_list', 'returns'])
 
-            def checkUnusedAssignments():
+            def checkUnusedBindings():
                 """
                 Check to see if any assignments have not been used.
                 """
-                for name, binding in self.scope.unusedAssignments():
-                    self.report(messages.UnusedVariable, binding.source, name)
-            self.deferAssignment(checkUnusedAssignments)
+                for name, binding in self.scope.unusedBindings():
+                    if isinstance(binding, Assignment):
+                        self.report(messages.UnusedVariable, binding.source, name)
+                    elif isinstance(binding, ClassDefinition):
+                        self.report(messages.UnusedClass, binding.source, name)
+                    elif isinstance(binding, FunctionDefinition):
+                        self.report(messages.UnusedFunction, binding.source, name)
+            self.deferAssignment(checkUnusedBindings)
 
             if PY2:
                 def checkReturnWithArgumentInsideGenerator():

pyflakes/messages.py

@@ -168,6 +168,28 @@ def __init__(self, filename, loc, names):
         self.message_args = (names,)
 
 
+class UnusedFunction(Message):
+    """
+    Indicates that a function has been defined but not actually used.
+    """
+    message = 'local function %r is defined but never used'
+
+    def __init__(self, filename, loc, names):
+        Message.__init__(self, filename, loc)
+        self.message_args = (names,)
+
+
+class UnusedClass(Message):
+    """
+    Indicates that a class has been defined but not actually used.
+    """
+    message = 'local class %r is defined but never used'
+
+    def __init__(self, filename, loc, names):
+        Message.__init__(self, filename, loc)
+        self.message_args = (names,)
+
+
 class ReturnWithArgsInsideGenerator(Message):
     """
     Indicates a return statement with arguments inside a generator.