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]=score18             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=123                 print("OK")

这是一个模拟管理成绩数据库，模拟教师添加成绩与学生查询成绩的行为。

这次主要利用了字典的键值对来帮助查询