In [ ]:
def constellation(date):
    a1 = int(date[0])
    a2 = int(date[1])
    a3 = int(date[2])
    a4 = int(date[3])
    month = (a1 * 10) + a2
    day = (a3 * 10) + a4
    if month == 1:
        if (day <= 19):
            cons = "摩羯座"
        else:
            cons = "水瓶座"
    elif month == 2:
        if (day <= 18):
            cons = "水瓶座"
        else:
            cons = "双鱼座"
    elif month == 3:
        if (day >= 21):
            cons = "白羊座"
        else:
            cons = "双鱼座"
    elif month == 4:
        if (day <= 19):
            cons = "白羊座"
        else:
            cons = "金牛座"
    elif month == 5:
        if (day <= 20):
            cons = "金牛座"
        else:
            cons = "双子座"
    elif month == 6:
        if (day <=21):
            cons = "双子座"
        else:
            cons = "巨蟹座"
    elif month == 7:
        if (day <=22):
            cons = "巨蟹座"
        else:
            cons = "狮子座"
    elif month ==8:
        if (day <= 22):
            cons = "狮子座"
        else:
            cons = "处女座"
    elif month == 9:
        if (day <= 22):
            cons = "处女座"
        else:
            cons = "天秤座"
    elif month == 10:
        if (day <= 23):
            cons = "天秤座"
        else:
            cons = "天蝎座"
    elif month == 11:
        if (day <= 22):
            cons = "天蝎座"
        else:
            cons = "射手座"
    elif month == 12:
        if (day <= 21):
            cons = "射手座"
        else:
            cons = "摩羯座"
    return cons

name = input('你的名字:')
date = input('你的出生月份日期\n: \n')
print('你是',constellation(date),sep='')