def __getmembers(object, predicate=None):
        """Return all members of an object as (name, value) pairs sorted by name.
        Optionally, only return members that satisfy a given predicate."""
        results = []
        for key in dir(object):
            try:
                value = getattr(object, key)
            except AttributeError:
                continue
            if not predicate or predicate(value):
                results.append((key, value))
        results.sort()
        return results
Return all members of an object as (name, value) pairs sorted by name.
        Optionally, only return members that satisfy a given predicate.
django_fsm/__init__.py