namedlambda.py

from collections import namedtuple

def flatten_tuples(values):
    for value in values:
        if isinstance(value, tuple):
            for inner_value in flatten_tuples(value):
                yield inner_value
        else:
            yield value

def fn(argument_names, function):
    Argument = namedtuple("Argument", argument_names)

    def wrapper(args):
        args = Argument(*flatten_tuples(args))
        function.__globals__['args'] = args
        return function()

    return wrapper

data = [(0, (1, 1)), (1, (2, 5)), (2, (11, 100))]
output = map(fn("key value1 value2", lambda: args.value1 + args.value2), data)
print(list(output))  # [2, 7, 111]