DE_Python soal nomor 2

DE_Python_2.py

def pipeline(*funcs):
    def helper(arg):
        argCount = len(funcs)
        if argCount > 0:
            res = []
            for elem in funcs:
                if(len(res) > 0):
                    helper = elem(res.pop())
                else:
                    helper = elem(arg)
                res.append(helper)
            helper = res.pop()
        return helper
    return helper
            
fun = pipeline(lambda x: x * 3, lambda x: x + 1, lambda x: x / 2)
print(fun(3)) #should print 5.0