Remove trailing whitespace

common/lib/xmodule/xmodule/modulestore/mongo.py

@@ -303,6 +303,7 @@ class MongoModuleStore(ModuleStoreBase):
                     # this is likely a leaf node, so let's record what metadata we need to inherit
                     metadata_to_inherit[child] = my_metadata
 
+
         if root is not None:
             _compute_inherited_metadata(root)
 
@@ -330,7 +331,7 @@ class MongoModuleStore(ModuleStoreBase):
         return tree
 
     def clear_cached_metadata_inheritance_tree(self, location):
-        key_name = '{0}/{1}'.format(location.org, location.course)       
+        key_name = '{0}/{1}'.format(location.org, location.course)
         if self.metadata_inheritance_cache is not None:
             self.metadata_inheritance_cache.delete(key_name)
 
@@ -611,7 +612,7 @@ class MongoModuleStore(ModuleStoreBase):
 
         self._update_single_item(location, {'metadata': metadata})
         # recompute (and update) the metadata inheritance tree which is cached
-        self.get_cached_metadata_inheritance_tree(loc, force_refresh = True)      
+        self.get_cached_metadata_inheritance_tree(loc, force_refresh = True)
 
     def delete_item(self, location):
         """
@@ -631,7 +632,7 @@ class MongoModuleStore(ModuleStoreBase):
 
         self.collection.remove({'_id': Location(location).dict()})
         # recompute (and update) the metadata inheritance tree which is cached
-        self.get_cached_metadata_inheritance_tree(Location(location), force_refresh = True)  
+        self.get_cached_metadata_inheritance_tree(Location(location), force_refresh = True)
 
 
     def get_parent_locations(self, location, course_id):

lms/djangoapps/courseware/grades.py

@@ -159,6 +159,7 @@ def grade(student, request, course, model_data_cache=None, keep_raw_scores=False
             # If we haven't seen a single problem in the section, we don't have to grade it at all! We can assume 0%
             for moduledescriptor in section['xmoduledescriptors']:
                 # Create a fake key to pull out a StudentModule object from the ModelDataCache
+
                 key = LmsKeyValueStore.Key(
                     Scope.student_state,
                     student.id,