(self, node_tuples=[])
A node_tuple is (index, hash, total_work).
A node_tuple is (index, hash, total_work).
A node_tuple is ( index hash total_work ) .
def __init__(self, node_tuples=[]):
        """
        A node_tuple is (index, hash, total_work).
        """
        self._set_tuples(node_tuples)
def __init__ ( self , node_tuples = [ ] ) : self . _set_tuples ( node_tuples )