Fix test precision and work around abstractclassmethod with python2
@@ -1678,7 +1678,8 @@ class IComposableState(utils.SubhookedABCMeta):
"""Apply changes to the context to be consistent with the state."""
pass
- @abc.abstractclassmethod
+ @classmethod
+ @abc.abstractmethod
def standardize_system(cls, system):
"""Standardize the given system.
