Swapped positions of backend and val arguments in Store.options
@@ -862,7 +862,7 @@ class Store(object):
current_backend = 'matplotlib'
@classmethod
- def options(cls, val=None, backend=None):
+ def options(cls, backend=None, val=None):
backend = cls.current_backend if backend is None else backend
if val is None:
return cls._options[backend]
