More PEP8, minor cleanup

jedi/parsing_representation.py

@@ -327,6 +327,7 @@ class Scope(Simple, IsScope):
         return "<%s: %s@%s-%s>" % (type(self).__name__, name,
                                     self.start_pos[0], self.end_pos[0])
 
+
 def _enables_absolute_import(imp):
     """
     Checks if the import is a ``__future__`` import that enables the
@@ -335,13 +336,14 @@ def _enables_absolute_import(imp):
     namespace, feature = imp.from_ns.names[0], imp.namespace.names[0]
     return namespace == "__future__" and feature == "absolute_import"
 
+
 class Module(IsScope):
-    """ For isinstance checks. fast_parser.Module also inherits from this. """
+    """
-    pass
+    For isinstance checks. fast_parser.Module also inherits from this.
+    """
 
 
 class SubModule(Scope, Module):
-
     """
     The top scope, which is always a module.
     Depending on the underlying parser this may be a full module or just a part

test/absolute_import/local_module.py

@@ -9,5 +9,6 @@ from __future__ import absolute_import
 
 import unittest # this is stdlib unittest, but jedi gets the local one
 
+
 class Assertions(unittest.TestCase):
     pass

test/absolute_import/unittest.py

@@ -8,6 +8,7 @@ will get this module again, causing infinite recursion.
 """
 from local_module import Assertions
 
+
 class TestCase(Assertions):
     def test(self):
         self.assertT