(self, target)
Initialize the filter.
        
        @type  target: node
        @param target: Target node.
Initialize the filter.
Initialize the filter .
def __init__(self, target):
        """
        Initialize the filter.
        
        @type  target: node
        @param target: Target node.
        """
        self.graph = None
        self.spanning_tree = None
        self.target = target
        self.done = False
def __init__ ( self , target ) : self . graph = None self . spanning_tree = None self . target = target self . done = False