Closures incorrectly return iterators(?)

[dzhang314]

def makeAdder(n):
    def adder(m):
        return m + n
    return adder

plusThree = makeAdder(3)
self.say(plusThree)                 # plusThree is some kind of function...
self.say(plusThree(2))              # but this produces [object Object], not 5
self.say(plusThree(2).next().value) # oddly enough, this produces 5

I have no idea what's going on under the hood, but it looks like plusThree(2) returns some kind of iterator.

[nwinter]

Fixed with @basicer's new Esper interpreter.