$ mio
mio 0.1.6.dev
mio> xs = [1, 2, 3]
===> [1, 2, 3]
mio> foo = block(a, b, c, a + b + c)
===> block(a, b, c):
       args            = args()
       body            = body()
       kwargs          = kwargs()
mio> foo(*xs)
===> 6