Fixed #20278 -- ensured .get() exceptions do not recurse infinitely

A regression caused by d5b93d3281fe93cbef5de84a52 made .get() error
reporting recurse infinitely on certain rare conditions. Fixed this by
not trying to print the given lookup kwargs.

1 files changed, 4 insertions, 6 deletions

diff --git a/django/db/models/query.py b/django/db/models/query.py
index d3763d3934..4313d044ee 100644
--- a/django/db/models/query.py
+++ b/django/db/models/query.py
@@ -388,13 +388,11 @@ class QuerySet(object):
             return clone._result_cache[0]
         if not num:
             raise self.model.DoesNotExist(
-                "%s matching query does not exist. "
-                "Lookup parameters were %s" %
-                (self.model._meta.object_name, kwargs))
+                "%s matching query does not exist." %
+                self.model._meta.object_name)
         raise self.model.MultipleObjectsReturned(
-            "get() returned more than one %s -- it returned %s! "
-            "Lookup parameters were %s" %
-            (self.model._meta.object_name, num, kwargs))
+            "get() returned more than one %s -- it returned %s!" %
+            (self.model._meta.object_name, num))
 
     def create(self, **kwargs):
         """