CODE EXAMPLE FOR PYTHON

guess number higher or lower in python

def guessNumber(n):
    lo, hi = 1, n+1
    while lo < hi:
        mid = (lo+hi)//2
        result = guess(mid)
        if result == 0:
            return mid
        elif result == 1:
            lo = mid+1
        elif result == -1:
            hi = mid

    return mid