Node#

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

Node in a graph.

Parameters:

  • id (str) – The unique identifier of the node.

  • name (str) – The name of the node.

  • data (Union[type[BaseModel], RunnableType]) – The data of the node.

  • metadata (Optional[dict[str, Any]]) – Optional metadata for the node. Defaults to None.

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

Attributes

data

Alias for field number 2

id

Alias for field number 0

metadata

Alias for field number 3

name

Alias for field number 1

Methods

__init__()

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.
__init__()#
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