def cal_upper(price):
    offset = price * 0.3
    return price + offset


def cal_lower(price):
    offset = price * 0.3
    return price - offset

author = "Pystock"

def cal_upper(price):
    offset = price * 0.3
    return price + offset


def cal_lower(price):
    offset = price * 0.3
    return price - offset

author = "Pystock"
