remove pep8 validation errors

tiramisu/storage/dictionary/setting.py

@@ -15,6 +15,7 @@
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 # ____________________________________________________________
+from copy import copy
 from ..util import Cache
 
 
@@ -58,10 +59,10 @@ class Settings(Cache):
         """return all modified settings in a dictionary
         example: {'path1': set(['prop1', 'prop2'])}
         """
-        return self._properties
+        return copy(self._properties)
 
     def get_modified_permissives(self):
         """return all modified permissives in a dictionary
         example: {'path1': set(['perm1', 'perm2'])}
         """
-        return self._permissives
+        return copy(self._permissives)

tiramisu/storage/dictionary/value.py

@@ -15,7 +15,7 @@
 # You should have received a copy of the GNU Lesser General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 # ____________________________________________________________
-
+from copy import copy
 from ..util import Cache
 
 
@@ -58,7 +58,7 @@ class Values(Cache):
         """return all values in a dictionary
         example: {'path1': (owner, 'value1'), 'path2': (owner, 'value2')}
         """
-        return self._values
+        return copy(self._values)
 
     # owner
     def setowner(self, path, owner):