Redirecting attribute access in a compound class with __getattr__

gistfile1.py

def __getattr__(self, attribute):
    """
    Defer any attribute access that was unsuccessful to a compound class.

    Introduce a safeguard, for example, when unpickling this class, by raising an AttributeError.
    """
    if "compound" in self.__dict__:
        self.compound.__getattribute__(attribute)
    raise AttributeError("'{0}' object has no attribute '{1}'".format(self.__class__.__name__, attribute))