class QuoteCycleType(object):
    """
    K线的周期类型
    """
    DAY = 1
    ONE_MINUTE = 2
    FIVE_MINUTE = 3
    TICK = 4


class Exchange(object):
    """
    交易所编码常量
    """
    DCE = 1
    SHFE = 2
    CZCE = 3
    CFFEX = 4
    SSE = 5
    SZSE = 6
    INE = 7
    VIPER = 8
