1 import json
2 import os
3
4
5 class DataToDB():
6
7 def readData(self):
8 if os.path.exists('data.txt'):
9 with open('data.txt', 'r+', encoding='utf-8') as fp:
10 content = fp.read()
11 else:
12 content = False
13
14 if content:
15 return json.loads(content)
16 else:
17 return []
18
19 def writeData(self, data):
20 content = json.dumps(data)
21 with open('data.txt', 'w+', encoding='utf-8') as fq:
22 fq.write(content)
23
24
25 class StudentInfo():
26
27 def __init__(self):
28 self.db = DataToDB()
29 self.stuList = self.db.readData()
30
31 # 增
32 def add(self, code, name, age):
33 stuinfo = {}
34 stuinfo['code'] = code
35 stuinfo['name'] = name
36 stuinfo['age'] = age
37 self.stuList.append(stuinfo)
38
39 self.db.writeData(self.stuList)
40
41 # 删
42 def delete(self, code):
43 for item in self.stuList:
44 if code == item['code']:
45 self.stuList.remove(item)
46
47 self.db.writeData(self.stuList)
48
49 # 改
50 def edit(self, code, name, age):
51 for item in self.stuList:
52 if code == item['code']:
53 item['name'] = name
54 item['age'] = age
55
56 self.db.writeData(self.stuList)
57
58 # 查
59 def select(self):
60 for item in self.stuList:
61 print(item)
62
63
64 stu = StudentInfo()
65 while True:
66 print("请选择您要进行的操作")
67 checked = input("添加（A）,修改（E），删除（D），查询(C)，退出（Q）")
68 if checked == 'a':
69 code = input('请输入学号')
70 name = input('请输入姓名')
71 age = input('请输入年龄')
72 stu.add(code, name, age)
73 elif checked == 'e':
74 code = input('请输入需要修改的学号')
75 print('-----------------请输入新的学员信息------------------')
76 name = input('请输入姓名')
77 age = input('请输入年龄')
78 stu.edit(code, name, age)
79 elif checked == 'd':
80 code = input('请输入需要删除的学号')
81 stu.delete(code)
82 elif checked == 'c':
83 stu.select()
84 elif checked == 'q':
85 exit('拜拜了，您嘞~')
