Refs #32508 -- Raised TypeError instead of using "assert" on unsupported operations for sliced querysets.

1 files changed, 2 insertions, 2 deletions

diff --git a/django/db/models/sql/query.py b/django/db/models/sql/query.py
index 5ca3f38e15..6c728d17bf 100644
--- a/django/db/models/sql/query.py
+++ b/django/db/models/sql/query.py
@@ -574,8 +574,8 @@ class Query(BaseExpression):
         """
         assert self.model == rhs.model, \
             "Cannot combine queries on two different base models."
-        assert not self.is_sliced, \
-            "Cannot combine queries once a slice has been taken."
+        if self.is_sliced:
+            raise TypeError('Cannot combine queries once a slice has been taken.')
         assert self.distinct == rhs.distinct, \
             "Cannot combine a unique query with a non-unique query."
         assert self.distinct_fields == rhs.distinct_fields, \