Block.vertices_attributes
- Block.vertices_attributes(names=None, values=None, keys=None)
Get or set multiple attributes of multiple vertices.
- Parameters:
- nameslist[str], optional
The names of the attribute.
- valueslist[Any], optional
The values of the attributes.
- keyslist[int], optional
A list of vertex identifiers.
- Returns:
- list[dict[str, Any]] | list[list[Any]] | None
If the parameter names is empty, the function returns a list containing an attribute dict per vertex. If the parameter names is not empty, the function returns a list containing a list of attribute values per vertex corresponding to the provided attribute names. The function returns None if it is used as a “setter”.
- Raises:
- KeyError
If any of the vertices does not exist.