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-rw-r--r--lib/sqlalchemy/sql/type_api.py9
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/sqlalchemy/sql/type_api.py b/lib/sqlalchemy/sql/type_api.py
index 5eea27e08..9838f0d5a 100644
--- a/lib/sqlalchemy/sql/type_api.py
+++ b/lib/sqlalchemy/sql/type_api.py
@@ -910,6 +910,15 @@ class TypeDecorator(SchemaEventTarget, TypeEngine):
"""
class Comparator(TypeEngine.Comparator):
+ """A :class:`.TypeEngine.Comparator` that is specific to
+ :class:`.TypeDecorator`.
+
+ User-defined :class:`.TypeDecorator` classes should not typically
+ need to modify this.
+
+
+ """
+
__slots__ = ()
def operate(self, op, *other, **kwargs):