Naive functional error collection in Python

functional_error_handling.py

def execute_with_error_collection(execution_spec, exception, args=None, kwargs=None):
    """
    Allows to functionally collect errors in a given set of operations by specifying lazily the operations to execute
    with the relative arguments

    :param execution_spec: lazy specification of the operations to execute. Expected fields: function, args, kwargs.
    :param exception: the type of exception to collect. Use Exception to capture everything.
    :param args: overrides the args field in the spec if specified. Used to apply all the functions on the same argument
    set without repetition in the spec.
    :param kwargs: overrides the kwargs field in the spec if specified. Used to apply all the functions on the same 
    argument set without repetition in the spec.
    :return: a tuple of results and errors
    """
    errors = {}
    results = {}
    for key, function_with_args in execution_spec.items():
        function = function_with_args["function"]
        args = function_with_args.setdefault("args", []) if not args else args
        kwargs = function_with_args.setdefault("kwargs", {}) if not kwargs else kwargs
        try:
            results[key] = function(*args, **kwargs)
        except exception as e:
            errors[key] = e

    return results, errors