Function extract_grouped_output_callback_args

dash/dependencies.py:198–222

(args, kwargs)

def extract_grouped_output_callback_args(args, kwargs):
    if "output" in kwargs:
        parameters = kwargs["output"]
        # Normalize list/tuple of multiple positional outputs to a tuple
        if isinstance(parameters, (list, tuple)):
            parameters = list(parameters)

        # Make sure dependency grouping contains only Output objects
        for dep in flatten_grouping(parameters):
            if not isinstance(dep, Output):
                raise ValueError(
                    f"Invalid value provided where an Output dependency "
                    f"object was expected: {dep}"
                )

        return parameters

    parameters = []
    while args:
        next_deps = flatten_grouping(args[0])
        if all(isinstance(d, Output) for d in next_deps):
            parameters.append(args.pop(0))
        else:
            break
    return parameters


def extract_grouped_input_state_callback_args_from_kwargs(kwargs):