avoid plain except

model_utils/managers.py

@@ -6,6 +6,7 @@ from django.db import models
 from django.db.models.fields.related import OneToOneField
 from django.db.models.manager import Manager
 from django.db.models.query import QuerySet
+from django.core.exceptions import ObjectDoesNotExist
 
 
 class InheritanceQuerySet(QuerySet):
@@ -36,7 +37,7 @@ class InheritanceQuerySet(QuerySet):
                 def get_attr(obj, s):
                     try:
                         return getattr(obj,s)
-                    except:
+                    except ObjectDoesNotExist:
                         return None
                 sub_obj = [getattr(obj, s) for s in self.subclasses if get_attr(obj, s)] or [obj]
                 sub_obj = sub_obj[0]