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-rw-r--r--lib/sqlalchemy/orm/attributes.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/sqlalchemy/orm/attributes.py b/lib/sqlalchemy/orm/attributes.py
index 2ecd233a7..f8078cfaa 100644
--- a/lib/sqlalchemy/orm/attributes.py
+++ b/lib/sqlalchemy/orm/attributes.py
@@ -28,7 +28,7 @@ ATTR_EMPTY = util.symbol('ATTR_EMPTY')
NO_VALUE = util.symbol('NO_VALUE')
NEVER_SET = util.symbol('NEVER_SET')
-PASSIVE_RETURN_NEVER_SET = util.symbol('PASSIVE_RETURN_NEVER_SET'
+PASSIVE_RETURN_NEVER_SET = util.symbol('PASSIVE_RETURN_NEVER_SET',
"""Symbol indicating that loader callables can be
fired off, but if no callable is applicable and no value is
present, the attribute should remain non-initialized.