python03-if

用if来实现猜年龄

age_of_master=66

guess_age=input(">>:")

if  age_of_master==int(guess_age):

　　print("yes,you are right")  #print钱tab缩进

else:

　　print("no,you must kidding me ")

多分支if语句：

score=input("you score:")   
if int(score)>90:
    print("you got an A")
elif int(score)>80:
    print("you got an B")
elif int(score)>60:
    print("you got an C")
else :
    print("you should try harder!")