使用datetime庫對自己的生日輸出？

import datetime

ID=str(input("輸入身份證號碼"))

birthday_year=ID[6:10]

birthday_month=ID[10:12]

birthday_day=ID[12:14]

print("{0}年{1}月{2}日".format(birthday_year,birthday_month,birthday_day))

Now_Time=datetime.datetime.today()

#獲取今日日期

today=int(str(Now_Time.month)+str(Now_Time.day))

if Now_Time.day<10:

today=int(str(Now_Time.month)+'0'+str(Now_Time.day))

#如果今日日期超過生日 則年齡為年份相減，否則年份相減再減1

if today-int(birthday_month+birthday_day)>=0:

age=Now_Time.year-int(birthday_year)

else:

age=Now_Time.year-int(birthday_year)-1

print("年齡:",age)