LangChain Reference home pageLangChain ReferenceLangChain Reference
  • GitHub
  • Main Docs
Deep Agents
LangChain
LangGraph
Integrations
LangSmith
  • Overview
    • Overview
    • Caches
    • Callbacks
    • Documents
    • Document loaders
    • Embeddings
    • Exceptions
    • Language models
    • Serialization
    • Output parsers
    • Prompts
    • Rate limiters
    • Retrievers
    • Runnables
    • Utilities
    • Vector stores
    MCP Adapters
    Standard Tests
    Text Splitters
    ⌘I

    LangChain Assistant

    Ask a question to get started

    Enter to send•Shift+Enter new line

    Menu

    OverviewCachesCallbacksDocumentsDocument loadersEmbeddingsExceptionsLanguage modelsSerializationOutput parsersPromptsRate limitersRetrieversRunnablesUtilitiesVector stores
    MCP Adapters
    Standard Tests
    Text Splitters
    Language
    Theme
    Pythonlangchain-coreutilsenvget_from_dict_or_env
    Functionā—Since v0.1

    get_from_dict_or_env

    Copy
    get_from_dict_or_env(
      data: dict[str, Any],
      key: str | list[
    View source on GitHub
    str
    ]
    ,
    env_key
    :
    str
    ,
    default
    :
    str
    |
    None
    =
    None
    )
    ->
    str

    Parameters

    NameTypeDescription
    data*dict[str, Any]

    The dictionary to look up the key in.

    key*str | list[str]

    The key to look up in the dictionary.

    This can be a list of keys to try in order.

    env_key*str
    defaultstr | None
    Default:None

    Get a value from a dictionary or an environment variable.

    The environment variable to look up if the key is not in the dictionary.

    The default value to return if the key is not in the dictionary or the environment.