Unbound local error in get_dynamodb_type when using set types.

1 files changed, 2 insertions, 1 deletions

diff --git a/boto/dynamodb/layer2.py b/boto/dynamodb/layer2.py
index 858c3998..b972e841 100644
--- a/boto/dynamodb/layer2.py
+++ b/boto/dynamodb/layer2.py
@@ -183,6 +183,7 @@ class Layer2(object):
         the corresponding Amazon DynamoDB type.  If the value passed in is
         not a supported type, raise a TypeError.
         """
+        dynamodb_type = None
         if is_num(val):
             dynamodb_type = 'N'
         elif is_str(val):
@@ -192,7 +193,7 @@ class Layer2(object):
                 dynamodb_type = 'NS'
             elif False not in map(is_str, val):
                 dynamodb_type = 'SS'
-        else:
+        if dynamodb_type is None:
             raise TypeError('Unsupported type "%s" for value "%s"' % (type(val), val))
         return dynamodb_type