HalfEdge.edges_attribute

HalfEdge.edges_attribute(name, value=None, keys=None)

Get or set an attribute of multiple edges.

Parameters

• name (str) – The name of the attribute.

• value (object, optional) – The value of the attribute. Default is None.

• keys (list[tuple[int, int]], optional) – A list of edge identifiers.

Returns

list[Any] | None – A list containing the value per edge of the requested attribute, or None if the function is used as a “setter”.

Raises

KeyError – If any of the edges does not exist.