if 语句

age_of_principal = 56  #基础
guess_age=int(input(">>:"))

if guess_age == age_of_principal:
    print("Yes,you get it..")
else:
    print("No,it‘s wrong")

age_of_principal = 56  #进阶
guess_age=int(input(">>:"))

if guess_age == age_of_principal:
    print("Yes,you get it..")
elif guess_age > age_of_principal:
    print("You should try smaller")
else:
    print("try bigger")

score = int(input("please input you score<<:"))
if score > 90:
    print("A")
elif score > 80:
    print("B")
elif score > 70:
    print("C")
elif score > 60:
    print("D")
else:
    print("You are not fit to study")