VariableTypeNode¶

Canonical path: o6.node.VariableTypeNode

VariableTypeNode ¶

Bases: Node

Node representing an OPC UA VariableType.

The call operator defaults to the Value attribute, like VariableNode, because a VariableType can carry a default value for its instances.

__call__(value=_UNSET, attr=None)

Read or write this VariableType's default value, or another attribute.

Identical to Node.__call__ except that the attribute defaults to Value.

__init__(backend, nodeId, browseName)

Wrap an existing node. Handles come from a client, server, or browsing.

Parameters:

Name	Type	Description	Default
`backend`	`Any`	The client or server backend that carries out operations.	required
`nodeId`	`NodeIdLike`	NodeId of the node.	required
`browseName`	`QualifiedName`	BrowseName of the node.	required

__getitem__(key)

Resolve a browse path relative to this node.

Use this where attribute access cannot reach: a BrowseName that is not a Python identifier, an ambiguous name, or a multi-step relative path.

Parameters:

Name	Type	Description	Default
`key`	`str \| 'ns0.datatypes.RelativePath'`	A relative-path string such as `"1:DeviceSet/1:Motor"`, or a `ns0.datatypes.RelativePath`.	required

Returns:

Type	Description
`MaybeAwaitable[list[Any]]`	Every node the path resolves to, as a list; awaitable when the owning
`MaybeAwaitable[list[Any]]`	client or server runs on an external event loop.

Raises:

Type	Description
`KeyError`	The path matches no node.