Require a string value to instantiate Binary DynamoDB type

Prevents incorrect usage which results in potentially confusing errors. Fixes boto#1956.
lyft · Jan 2, 2014 · bca6d77 · bca6d77
1 parent ee203bf
commit bca6d77
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/boto/dynamodb/types.py b/boto/dynamodb/types.py
@@ -136,6 +136,9 @@ def dynamize_value(val):
 
 class Binary(object):
     def __init__(self, value):
+        if not isinstance(value, basestring):
+            raise TypeError('Value must be a string of binary data!')
+
         self.value = value
 
     def encode(self):