diff options
Diffstat (limited to 'lib/sqlalchemy/sql/roles.py')
| -rw-r--r-- | lib/sqlalchemy/sql/roles.py | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/lib/sqlalchemy/sql/roles.py b/lib/sqlalchemy/sql/roles.py index 577d868fd..231c70a5b 100644 --- a/lib/sqlalchemy/sql/roles.py +++ b/lib/sqlalchemy/sql/roles.py @@ -22,9 +22,7 @@ if TYPE_CHECKING: from .base import _EntityNamespace from .base import ColumnCollection from .base import ReadOnlyColumnCollection - from .elements import ClauseElement from .elements import ColumnClause - from .elements import ColumnElement from .elements import Label from .elements import NamedColumn from .selectable import _SelectIterable @@ -271,7 +269,14 @@ class StatementRole(SQLRole): __slots__ = () _role_name = "Executable SQL or text() construct" - _propagate_attrs: _PropagateAttrsType = util.immutabledict() + if TYPE_CHECKING: + + @util.memoized_property + def _propagate_attrs(self) -> _PropagateAttrsType: + ... + + else: + _propagate_attrs = util.EMPTY_DICT class SelectStatementRole(StatementRole, ReturnsRowsRole): |