模拟成绩数据库

 1 name_score={}
 2 n=0
 3 while n==0:
 4     a="0"
 5     r=input("You are a teacher or a student?if you are a student,please input '1',else,you can input 't'")
 6     if r=="1":
 7         ask=input("please input your name,and we'll find your score.")
 8         if ask in name_score:
 9             print("He's score is:",name_score[ask])
10         else:
11             print("is not a student.")
12     else:
13         while a=='0':        
14             print("please input the student's name and he's score")
15             name=input("input he's name.")
16             score=input("input he's score.")
17             name_score[name]=score
18             on=input("Do you have another student?if you have,input'y',else,input'no'.")
19             if on=='y':
20                 a='0'
21             else:
22                 a=1
23                 print("OK")