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-rw-r--r--lib/sqlalchemy/sql/visitors.py8
1 files changed, 3 insertions, 5 deletions
diff --git a/lib/sqlalchemy/sql/visitors.py b/lib/sqlalchemy/sql/visitors.py
index 6efce504a..4d2948462 100644
--- a/lib/sqlalchemy/sql/visitors.py
+++ b/lib/sqlalchemy/sql/visitors.py
@@ -49,11 +49,9 @@ class VisitableType(type):
Classes having no __visit_name__ attribute will remain unaffected.
"""
def __init__(cls, clsname, bases, clsdict):
- if cls.__name__ == 'Visitable' or not hasattr(cls, '__visit_name__'):
- super(VisitableType, cls).__init__(clsname, bases, clsdict)
- return
-
- _generate_dispatch(cls)
+ if clsname not in ('MetaBase', 'Visitable') and \
+ hasattr(cls, '__visit_name__'):
+ _generate_dispatch(cls)
super(VisitableType, cls).__init__(clsname, bases, clsdict)