Some cleanups

flask/app.py

@@ -1158,7 +1158,6 @@ class Flask(_PackageBoundObject):
         """
         self.jinja_env.tests[name or f.__name__] = f
 
-
     @setupmethod
     def template_global(self, name=None):
         """A decorator that is used to register a custom template global function.
@@ -1710,7 +1709,7 @@ class Flask(_PackageBoundObject):
         if bp is not None and bp in self.teardown_request_funcs:
             funcs = chain(funcs, reversed(self.teardown_request_funcs[bp]))
         for func in funcs:
-            rv = func(exc)
+            func(exc)
         request_tearing_down.send(self, exc=exc)
 
     def do_teardown_appcontext(self, exc=None):

flask/debughelpers.py

@@ -78,7 +78,7 @@ def attach_enctype_error_multidict(request):
         def __getitem__(self, key):
             try:
                 return oldcls.__getitem__(self, key)
-            except KeyError as e:
+            except KeyError:
                 if key not in request.form:
                     raise
                 raise DebugFilesKeyError(request, key)