Replace tabs with spaces

multi_key_dict.py

@@ -151,10 +151,10 @@ class multi_key_dict(object):
                 key_type = str(type(k))
                 if (key_type in self.__dict__ and k in self.__dict__[key_type]):
                     del self.__dict__[key_type][k]
-					
-			# remove the reference from the given key
+
+            # remove the reference from the given key
             del self.__dict__[key_type][key]
-			
+
         else:
             raise KeyError(key)