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-rw-r--r--lib/sqlalchemy/util/__init__.py1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/sqlalchemy/util/__init__.py b/lib/sqlalchemy/util/__init__.py
index 00066cbed..7c5257b87 100644
--- a/lib/sqlalchemy/util/__init__.py
+++ b/lib/sqlalchemy/util/__init__.py
@@ -157,6 +157,7 @@ from .langhelpers import set_creation_order # noqa
from .langhelpers import string_or_unprintable # noqa
from .langhelpers import symbol # noqa
from .langhelpers import unbound_method_to_callable # noqa
+from .langhelpers import walk_subclasses # noqa
from .langhelpers import warn # noqa
from .langhelpers import warn_exception # noqa
from .langhelpers import warn_limited # noqa