Block.vertex_attributes
- Block.vertex_attributes(key, names=None, values=None)
Get or set multiple attributes of a vertex.
- Parameters:
- keyint
The identifier of the vertex.
- nameslist[str], optional
A list of attribute names.
- valueslist[Any], optional
A list of attribute values.
- Returns:
- dict[str, Any] | list[Any] | None
If the parameter names is empty, the function returns a dictionary of all attribute name-value pairs of the vertex. If the parameter names is not empty, the function returns a list of the values corresponding to the requested attribute names. The function returns None if it is used as a “setter”.
- Raises:
- KeyError
If the vertex does not exist.