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-rw-r--r--lib/sqlalchemy/orm/persistence.py2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/sqlalchemy/orm/persistence.py b/lib/sqlalchemy/orm/persistence.py
index b3381b039..519eb393f 100644
--- a/lib/sqlalchemy/orm/persistence.py
+++ b/lib/sqlalchemy/orm/persistence.py
@@ -13,6 +13,8 @@ The functions here are called only by the unit of work functions
in unitofwork.py.
"""
+from __future__ import annotations
+
from itertools import chain
from itertools import groupby
from itertools import zip_longest