causaldag.classes.dag.DAG.add_node

DAG.add_node(node: Hashable)[source]

Add node to the DAG.

Parameters:node – a hashable Python object

See also

add_nodes_from()

Examples

>>> import causaldag as cd
>>> g = cd.DAG()
>>> g.add_node(1)
>>> g.add_node(2)
>>> len(g.nodes)
2