def __init__(self, manager):
        super(ParameterSubscription, self).__init__(manager)

        self.value_cache = {}
        """Value cache keyed by parameter name."""

        self.delivery_count = 0
        """The number of parameter deliveries."""

        # The actual subscription_id is set async after server reply
        self.subscription_id = -1
        """Subscription number assigned by the server. This is set async,
        so may not be immediately available."""
def __init__ ( self , manager ) : super ( ParameterSubscription , self ) . __init__ ( manager ) self . value_cache = { } self . delivery_count = 0 self . subscription_id = - 1
Value cache keyed by parameter name.