Tweaked the exception message for Django's DoesNotExist messages to make it easier to figure out the situation.

 - Legacy-Id: 6316

Author: levkowetz

django/db/models/query.py

@@ -343,8 +343,8 @@ def get(self, *args, **kwargs):
         if num == 1:
             return clone._result_cache[0]
         if not num:
-            raise self.model.DoesNotExist("%s matching query does not exist."
-                    % self.model._meta.object_name)
+            raise self.model.DoesNotExist("%s matching query does not exist. Lookup parameters were %s"
+                    % (self.model._meta.object_name, kwargs))
         raise self.model.MultipleObjectsReturned("get() returned more than one %s -- it returned %s! Lookup parameters were %s"
                 % (self.model._meta.object_name, num, kwargs))