diff options
Diffstat (limited to 'lib/sqlalchemy/orm/instrumentation.py')
| -rw-r--r-- | lib/sqlalchemy/orm/instrumentation.py | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/sqlalchemy/orm/instrumentation.py b/lib/sqlalchemy/orm/instrumentation.py index a5dc305d2..0d4b630da 100644 --- a/lib/sqlalchemy/orm/instrumentation.py +++ b/lib/sqlalchemy/orm/instrumentation.py @@ -39,6 +39,7 @@ from typing import Optional from typing import Set from typing import TYPE_CHECKING from typing import TypeVar +import weakref from . import base from . import collections @@ -167,7 +168,7 @@ class ClassManager( if registry: registry._add_manager(self) if declarative_scan: - self.declarative_scan = declarative_scan + self.declarative_scan = weakref.ref(declarative_scan) if expired_attribute_loader: self.expired_attribute_loader = expired_attribute_loader |