def guessNumber(pick, n):
    lower = 1
    higher = n

    def guess(a):
        if a == pick:
            return 0
        elif a < pick:
            return -1
        else:
            return 1
        while guess(num) != 0:
        if guess(num) == -1:
            lower = num
            print("low")
            print("new guess ",num)
        elif guess(num) == 1:
            higher = num+1
            print("high")
            print("new guess ",num)
        num = (lower + higher) // 2

    if guess(num) == 0:
        print("The number is ", num)

guessNumber(2,10)