Function update_defaults

dask/config.py:683–697

Add a new set of defaults to the configuration It does two things: 1. Add the defaults to a global collection to be used by refresh later 2. Updates the global config with the new configuration. Old values are prioritized over new ones, unless the current value is the

(
    new: Mapping, config: dict = config, defaults: list[Mapping] = defaults
)

def update_defaults(
    new: Mapping, config: dict = config, defaults: list[Mapping] = defaults
) -> None:
    """Add a new set of defaults to the configuration

    It does two things:

    1.  Add the defaults to a global collection to be used by refresh later
    2.  Updates the global config with the new configuration.
        Old values are prioritized over new ones, unless the current value
        is the old default, in which case it's updated to the new default.
    """
    current_defaults = merge(*defaults)
    defaults.append(new)
    update(config, new, priority="new-defaults", defaults=current_defaults)


def expand_environment_variables(config: Any) -> Any: