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-rw-r--r--django/db/models/sql/constants.py4
1 files changed, 2 insertions, 2 deletions
diff --git a/django/db/models/sql/constants.py b/django/db/models/sql/constants.py
index b5fd048799..612755a012 100644
--- a/django/db/models/sql/constants.py
+++ b/django/db/models/sql/constants.py
@@ -2,11 +2,11 @@ from collections import namedtuple
import re
# Valid query types (a dictionary is used for speedy lookups).
-QUERY_TERMS = dict([(x, None) for x in (
+QUERY_TERMS = set([
'exact', 'iexact', 'contains', 'icontains', 'gt', 'gte', 'lt', 'lte', 'in',
'startswith', 'istartswith', 'endswith', 'iendswith', 'range', 'year',
'month', 'day', 'week_day', 'isnull', 'search', 'regex', 'iregex',
-)])
+])
# Size of each "chunk" for get_iterator calls.
# Larger values are slightly faster at the expense of more storage space.