six: fix tuple assignment in method signature for py3
@@ -1555,7 +1555,8 @@ class Variable(Identifier):
class Statement(Node, tuple):
- def __new__(cls, (subject, predicate, object), context):
+ def __new__(cls, triple, context):
+ subject, predicate, object = triple
warnings.warn(
"Class Statement is deprecated, and will be removed in " +
"the future. If you use this please let rdflib-dev know!",
