1 """如果是将这个系统改成绩查询的，又该怎么做，字典的话如何进行叠加"""
2
3 #定义信息列表
4
5 print("欢迎进入学生成绩管理系统！ ************ 请查看你能进行的操作 ************")6 menu = ("1.录入","2.查询","3.修改","4.删除","5.预览","6.退出")7 orderid = (1,2,3,4,5,6) #操作的步骤选择
8 student =[]9 a = 1
10 m =011 n =012 while a == 1: #目的是使操作一直在使用，循环，最后不操作退出
13 for opration inmenu:14 print(opration)15 order = input("请输入序号，进行你想要的操作:")16 """while True:17 order = input("请输入序号，进行你想要的操作:")18 try:19 order = int(order)20 break21 except:22 print("pls enter number")23 continue"""
24 #order = input("请输入序号，进行你想要的操作:")#限制输入的数据类型
25 iforder.isdigit():26 order =int(order)27 else:28 print("请输入正确的数字")29 continue
30
31 if int(order) inorderid:32
33 while int(order) == 1:34 valid =035 while notvalid:36 valid = 1
37 name = input("请输入学生的姓名：")#数据录入#需要解决重复录入的问题
38 for stu_name instudent:39 if name == stu_name["姓名"]:40 stu_id = input("该学生已经录入信息，请确认是否重复录入,并比较学号")41 if stu_id == stu_name["学号"]:42 print("重复录入！请录入下一个")43 valid =044 break
45
46 print("请继续接下来的信息录入！")47
48 id = input("请输入学生号：")49 classid = input("请输入学生的班级：")50 Chinese = float(input("请输入语文成绩："))51 Math = float(input("请输入数学成绩："))52 English = float(input("请输入英语成绩："))53 Physical = float(input("请输入物理成绩："))54 Chemistry = float(input("请输入化学成绩："))55 Biological = float(input("请输入生物成绩："))56 Score = round((Chinese * 3 + Math * 3 + English * 3 + Physical * 2 + Chemistry * 2 + Biological * 2) / 15,2)57
58 #定义一个新的字典
59 grade ={}60 grade["姓名"] =name61 grade["学号"] =id62 grade["班级"] =classid63 grade["语文"] =Chinese64 grade["数学"] =Math65 grade["英语"] =English66 grade["物理"] =Physical67 grade["化学"] =Chemistry68 grade["生物"] =Biological69 grade["加权总分"] =Score70
71 #将一个字典，添加到列表中
72 student.append(grade)73
74 print("你已经成功录入了一份信息，继续录入请按Y,返回菜单请按N")75 exit =input()76 if exit == "y":77 continue
78 else:79 break
80
81
82 while int(order) == 2:83
84 name = input("请输入你要查找的学生的姓名：")85 n += 1
86 if n > 2:87 print("你已经重复输错三次，请确认姓名再进行查询操作")88 n =089 continue
90
91 t_name = 0#输入正确标志位
92
93 for sname instudent:94 if name == sname["姓名"]:95 print("该同学的记录是：",sname)96 #print("%s同学的记录是：学号%s 班级%s 语文%.2f 数学%.2f 英语%.2f 物理%.2f 化学%.2f 生物%.2f "
97 #"加权总分%.2f" % (name,sname["学号"],sname["班级"],sname["语文"],sname["数学"],sname["物理"],sname["化学"],sname["生物"],sname["加权总分"]))
98
99 t_name = 1
100
101 break
102
103 if t_name ==0:104 exit = input("查询错误，请重确认要查询的学生姓名，退回主菜单请按N")105 if exit == "n":106 break
107 continue
108 else:109 exit = input("查询成功，输入名字继续查询，退回主菜单请按N")110 if exit == "n":111 break
112 continue
113
114
115 while int(order) == 3:116 name = input("请输入你要修改信息的学生的姓名：")117
118 t_name = 0 #输入正确标志位
119
120 for sname instudent:121 if name == sname["姓名"]:122 id = input("请输入学生号：")123 classid = input("请输入学生的班级：")124 Chinese = float(input("请输入语文成绩："))125 Math = float(input("请输入数学成绩："))126 English = float(input("请输入英语成绩："))127 Physical = float(input("请输入物理成绩："))128 Chemistry = float(input("请输入化学成绩："))129 Biological = float(input("请输入生物成绩："))130 Score =round(131 (Chinese * 3 + Math * 3 + English * 3 + Physical * 2 + Chemistry * 2 + Biological * 2) / 15, 2)132
133 grade["姓名"] =name134 grade["学号"] =id135 grade["班级"] =classid136 grade["语文"] =Chinese137 grade["数学"] =Math138 grade["英语"] =English139 grade["物理"] =Physical140 grade["化学"] =Chemistry141 grade["生物"] =Biological142 grade["加权总分"] =Score143
144 t_name = 1
145 break
146
147 if t_name ==0:148 exit = input("查询错误，请重确认要修改的学生姓名，退回主菜单请按N")149 if exit == "n":150 break
151 continue
152 else:153 exit = input("查询成功，输入名字继续查询，退回主菜单请按N")154 if exit == "n":155 break
156 continue
157
158
159 while int(order) == 4:160
161 name = input("请输入你要删除信息的学生的姓名：")162
163 t_name = 0 #输入正确标志位
164
165 for sname instudent:166 if name == sname["姓名"]:167 student.remove(sname)168 t_name = 1
169 break
170 if t_name ==0:171 exit = input("查询错误，请重确认要删除的学生姓名，退回主菜单请按N")172 if exit == "n":173 break
174 continue
175 else:176 exit = input("查询成功，输入名字继续删除，退回主菜单请按N")177 if exit == "n":178 break
179 continue
180
181 while int(order) == 5:182 if len(student) ==0:183 print("系统里面没有数据，请录数据")184 break
185 else:186 for s_name instudent:187 print(s_name)188 exit = input("预览成功！按任意键返回主菜单 ")189 break
190
191 if int(order) == 6:192 print("感谢你的使用，再见！ ")193 break
194
195
196 else:197 print("输入有误，请输入序号1~6")198 m += 1
199 if m > 2:200 print("你已经重复输错三次，结束本次操作")201 break
202 continue