Rounding.py

def rounding(num):
    round_num, round_num2 = 0, 0
    uniques = np.sort(np.unique(train['price']))
    for i,n in enumerate(uniques):
        if n > num:
            break
        round_num = n
        round_num2 = uniques[i+1]
    return (round_num+round_num2)/2