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# `langchain_core.runnables.graph`.Node

class langchain_core.runnables.graph.Node(id: str, data: Union[Type[BaseModel], RunnableType])

  Node in a graph.

  Create new instance of Node(id, data)

  Attributes

  `data` | Alias for field number 1
  `id` | Alias for field number 0

  Methods

  `__init__`() |
  `count`(value, /) | Return number of occurrences of value.
  `index`(value[, start, stop]) | Return first index of value.

  Parameters

    - id (str) –

    - data (Union[Type[BaseModel], RunnableType]) –

  __init__()
  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

- The underlying python-gremlin has a problem when running in notebook