2 files changed, 7 insertions, 2 deletions
diff --git a/lib/sqlalchemy/types.py b/lib/sqlalchemy/types.py
index ebcffca6e..e31cecfe2 100644
--- a/lib/sqlalchemy/types.py
+++ b/lib/sqlalchemy/types.py
@@ -817,6 +817,9 @@ class TypeDecorator(TypeEngine):
         """
         return self.impl.compare_values(x, y)
 
+    def __repr__(self):
+        return util.generic_repr(self, to_inspect=self.impl)
+
 
 class Variant(TypeDecorator):
     """A wrapping type that selects among a variety of
diff --git a/lib/sqlalchemy/util/langhelpers.py b/lib/sqlalchemy/util/langhelpers.py
index 9761aeae9..55b78090a 100644
--- a/lib/sqlalchemy/util/langhelpers.py
+++ b/lib/sqlalchemy/util/langhelpers.py
@@ -281,14 +281,16 @@ def unbound_method_to_callable(func_or_cls):
     else:
         return func_or_cls
 
-def generic_repr(obj, additional_kw=()):
+def generic_repr(obj, additional_kw=(), to_inspect=None):
     """Produce a __repr__() based on direct association of the __init__()
     specification vs. same-named attributes present.
 
     """
+    if to_inspect is None:
+        to_inspect = obj
     def genargs():
         try:
-            (args, vargs, vkw, defaults) = inspect.getargspec(obj.__init__)
+            (args, vargs, vkw, defaults) = inspect.getargspec(to_inspect.__init__)
         except TypeError:
             return