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# `langchain_core.runnables.utils`.ConfigurableFieldSpec

class langchain_core.runnables.utils.ConfigurableFieldSpec(id: str, annotation: Any, name: Optional[str] = None, description: Optional[str] = None, default: Any = None, is_shared: bool = False, dependencies: Optional[List[str]] = None)

  Field that can be configured by the user. It is a specification of a field.

  Create new instance of ConfigurableFieldSpec(id, annotation, name, description, default, is_shared, dependencies)

  Attributes

  `annotation` | Alias for field number 1
  `default` | Alias for field number 4
  `dependencies` | Alias for field number 6
  `description` | Alias for field number 3
  `id` | Alias for field number 0
  `is_shared` | Alias for field number 5
  `name` | Alias for field number 2

  Methods

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

  Parameters

    - id (str) –

    - annotation (Any) –

    - name (Optional[str]) –

    - description (Optional[str]) –

    - default (Any) –

    - is_shared (bool) –

    - dependencies (Optional[List[str]]) –

  __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 ConfigurableFieldSpec

- Remembers