graphical_models.classes.dags.dag.DAG.incident_arcs

DAG.incident_arcs(node: Hashable) → Set[Tuple[Hashable, Hashable]]

Return all arcs with node as either source or target.

Parameters

node – The node.

See also

incoming_arcs, outgoing_arcs

Returns

Return all arcs i->j such that either i=``node`` of j=``node``.

Return type

Set[arc]

Example

>>> from graphical_models import DAG
>>> g = DAG(arcs={(1, 2), (1, 3), (2, 3)})
>>> g.incident_arcs(2)
{(1, 2), (2, 3)}