def __repr__(self):
    r = '<{} {}: {}, {}: {}>'
    h1 = self.shared_holder.held_object
    h2 = self.static_holder.held_object
    return r.format(self.__class__.__name__, h1.get_id(), h1.filename, h2.get_id(), h2.filename)
def __repr__(self):
    r = '<{} {}: {}, {}: {}>'
    h1 = self.shared_holder.held_object
    h2 = self.static_holder.held_object
    return r.format(self.__class__.__name__, h1.get_id(), h1.filename, h2.get_id(), h2.filename)