写一个python脚本 输入一个人的生日输出他的星座

好的，这个问题很简单。以下是一个Python脚本, 实现了这个功能：

def get_star_sign(birthday):
    month, day = int(birthday[0:2]), int(birthday[2:4])
    if (month == 1 and day <= 20) or (month == 12 and day >= 22):
        return "Capricorn"
    elif (month == 1 and day >= 21) or (month == 2 and day <= 18):
        return "Aquarius"
    elif (month == 2 and day >= 19) or (month == 3 and day <= 20):
        return "Pisces"
    elif (month == 3 and day >= 21) or (month == 4 and day <= 20):
        return "Aries"
    elif (month == 4 and day >= 21) or (month == 5 and day <= 20):
        return "Taurus"
    elif (month == 5 and day >= 21) or (month == 6 and day <= 20):
        return "Gemini"
    elif (month == 6 and day >= 21) or (month == 7 and day <= 22):
        return "Cancer"
    elif (month == 7 and day >= 23) or (month == 8 and day <= 22):
        return "Leo"
    elif (month == 8 and day >= 23) or (month == 9 and day <= 22):
        return "Virgo"
    elif (month == 9 and day >= 23) or (month == 10 and day <= 22):
        return "Libra"
    elif (month == 10 and day >= 23) or (month == 11 and day <= 22):
        return "Scorpio"
    elif (month == 11 and day >= 23) or (month == 12 and day <= 21):
        return "Sagittarius"

birthday = input("请输入生日，格式为 MMDD：")
star_sign = get_star_sign(birthday)
print("星座是：", star_sign)

你可以输入一个人的生日（月份和日期）, 然后这个Python脚本会判断并输出对应的星座。