Node#

class langchain_core.runnables.graph.Node( id: str, name: str, data: type[BaseModel] | RunnableType | None, metadata: dict[str, Any] | None, )[source]#

Node in a graph.

Create new instance of Node(id, name, data, metadata)

Attributes

`data`	The data of the node.
`id`	The unique identifier of the node.
`metadata`	Optional metadata for the node.
`name`	The name of the node.

Methods

`copy`(*[, id, name])	Return a copy of the node with optional new id and name.
`count`(value, /)	Return number of occurrences of value.
`index`(value[, start, stop])	Return first index of value.

Parameters:

id (str)
name (str)
data (Union[type[BaseModel], RunnableType, None])
metadata (Optional[dict[str, Any]])

copy( *, id: str | None = None, name: str | None = None, ) → Node[source]#

Return a copy of the node with optional new id and name.

Parameters:

id (str | None) – The new node id. Defaults to None.
name (str | None) – The new node name. Defaults to None.

Returns:

A copy of the node with the new id and name.

Return type:

Node

count(value, /)#: Return number of occurrences of value.

index(value, start=0, stop=9223372036854775807, /)#

Return first index of value.

Raises ValueError if the value is not present.

Examples using Node