secret_from_env

langchain_core.utils.utils.secret_from_env(key: str | Sequence[str], /) → Callable[[], SecretStr]

langchain_core.utils.utils.secret_from_env(key: str, /, *, default: str) → Callable[[], SecretStr]

langchain_core.utils.utils.secret_from_env(key: str | Sequence[str], /, *, default: None) → Callable[[], SecretStr | None]

langchain_core.utils.utils.secret_from_env(key: str, /, *, error_message: str) → Callable[[], SecretStr]

Secret from env.

Parameters:

• key – The environment variable to look up.

• default – The default value to return if the environment variable is not set.

• error_message – the error message which will be raised if the key is not found and no default value is provided. This will be raised as a ValueError.

Returns:

factory method that will look up the secret from the environment.