BendNetwork.edges_attribute
- BendNetwork.edges_attribute(name, value=None, keys=None)
 Get or set an attribute of multiple edges.
- Parameters:
 - namestr
 The name of the attribute.
- valueobj, optional
 The value of the attribute.
- keyslist[tuple[hashable, hashable]], 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.