that's all of engine

1 files changed, 6 insertions, 2 deletions

diff --git a/lib/sqlalchemy/engine/reflection.py b/lib/sqlalchemy/engine/reflection.py
index cf4a1d532..4b2987851 100644
--- a/lib/sqlalchemy/engine/reflection.py
+++ b/lib/sqlalchemy/engine/reflection.py
@@ -41,8 +41,12 @@ def cache(fn, self, con, *args, **kw):
         return fn(self, con, *args, **kw)
     key = (
             fn.__name__,
-            tuple(a for a in args if isinstance(a, str)),
-            tuple((k, v) for k, v in kw.items() if isinstance(v, (str, int, float)))
+            tuple(a for a in args if isinstance(a, util.string_types)),
+            tuple((k, v) for k, v in kw.items() if
+                    isinstance(v,
+                        util.string_types + util.int_types + (float, )
+                    )
+                )
         )
     ret = info_cache.get(key)
     if ret is None: