def labels(self):
        """ Returns the taxon set of the tree (same as the label- or
        leaf-set) """
        return set([n.taxon.label for n in self._tree.leaf_nodes()])
def labels ( self ) : return set ( [ n . taxon . label for n in self . _tree . leaf_nodes ( ) ] )
Returns the taxon set of the tree (same as the label- or
        leaf-set)