I really liked the syntax that mimicked lambda even if I find it verbose : a = local x=1, y=2: x + y + 3 Even if I still prefer the postfix syntax : a = x + 3 where x = 2 About scheme "let" vs "let*", the paralel in Python is : a, b, c = 5, a+1, 2 # let syntax a = 5; b = a+1; c = 2 # let* syntax Which makes be wonder, we could use the semicolon in the syntax ? a = local x = 1; y = x+1: x + y + 3 Or with the postfix syntax : a = x + y + 3 where x = 1; y = x+1 Chaining where would be is syntax error : a = x + y + 3 where x = 1 where y = x+1 Parenthesis could be mandatory if one wants to use tuple assignment : a = local (x, y) = 1, 2: x + y + 3 When I see that, I really want to call it "def" a = def (x, y) = 1, 2: x + y + 3 a = def x = 1; y = 2: x + y + 3 Which is read define x = 1 then y = 2 in x + y + 3 Using def would be obvious this is not a function call.