Python简易学生管理系统

Posted 2023-04-08 映辉博客

目录结构：

 

 1、 学生文件 student.py

# 学生类
class Student(object):
    # 存放学生信息
    student_info = 
    # 学生初始化方法
    def __init__(self,id,name,addr,tel):
        self.id = id
        self.name = name
        self.addr = addr
        self.tel = tel
        # 将学生的信息添加到学生信息字典里
        self.student_info["学号"] = self.id
        self.student_info["姓名"] = self.name
        self.student_info["地址"] = self.addr
        self.student_info["电话"] = self.tel

2、 管理系统文件 manager.py

import json
import student
# 管理系统类
class Manager(object):

    # 展示所有学生信息的方法
    def show_all_student(self):
        with open("students_info.json", mode="r", encoding="utf8") as f:
            content = json.loads(f.read())
            if content:
                print("所有的学生信息如下：")
                print("#######################################")
                for stu in content:
                    print(stu)
                print("#######################################")
            elif len(content) == 0:
                print("Sorry! 一个学生都没有！")

    # 添加学生的方法
    def add_student(self):
        print("~~~~~~~~~~~~~~~~~~~~将要开始添加学生信息~~~~~~~~~~~~~~~~~~~~~")
        id = input("请输入学号：")
        name = input("请输入姓名：")
        addr = input("请输入地址：")
        tel = input("请输入电话：")
        new_student = student.Student(id, name, addr, tel)
        with open("students_info.json", mode="r", encoding="utf8") as f1:
            content = json.loads(f1.read())

        new_content = list(content)
        new_content.append(new_student.student_info)
        json_content = json.dumps(new_content)

        with open("students_info.json",mode="w",encoding="utf8") as f2:
            f2.write(json_content)
        print("~~~~~~~~~~~~~~~~~~~~！！！添加完成！！！~~~~~~~~~~~~~~~~~~~~~")


    # 删除学生的方法
    def delete_student(self):
        print("~~~~~~~~~~~~~~~~~~~~将要开始添加学生信息~~~~~~~~~~~~~~~~~~~~~")
        id = input("请输入要删除的学生的学号：")
        with open("students_info.json",mode="r",encoding="utf8") as f:
            content = list(json.loads(f.read()))
            for item in content:
                if item["学号"] == id:
                    content.remove(item)
                    json_content = json.dumps(content)
                    with open("students_info.json", mode="w", encoding="utf8") as f2:
                        f2.write(json_content)
                    print("~~~~~~~~~~~~~~~~~~~~！！！删除成功！！！~~~~~~~~~~~~~~~~~~~~~")
                    return
            print("输入的学号不存在！！！")


    # 修改学生的方法
    def update_student(self):
        print("~~~~~~~~~~~~~~~~~~~~开始修改学生信息~~~~~~~~~~~~~~~~~~~~~")
        with open("students_info.json", mode="r", encoding="utf8") as f:
            text = list(json.loads(f.read()))

        delete_number = input("请输入要修改的学生学号：")
        for i in text:
            if i["学号"] == delete_number:
                new_addr = input("请输入修改后的地址：")
                new_tel = input("请输入修改后的电话：")
                i["地址"] = new_addr
                i["电话"] = new_tel
                json_text = json.dumps(text)
                with open("students_info.json", mode="w", encoding="utf8") as f2:
                    f2.write(json_text)
                print("~~~~~~~~~~~~~~~~~~~~修改成功~~~~~~~~~~~~~~~~~~~~~")
                return
        print("输入的学号不存在！！！！！！！！！！！！！")


    # 系统启动入口方法
    def system_start(self):
        while True:
            print("########### 欢迎来到学生管理系统 ############")
            print("################ 请登录系统 ################")
            user_name = input("请输入用户名: ")
            pass_word = input("  请输入密码: ")
            if user_name == "zyh" and pass_word == "123456":
                print("################ 登陆成功！################")
                break
            else:
                print("登录信息错误，请重新登录！")

        while True:
            print("################ 你已经进入学生管理系统 ################")
            print("###################### 请选择功能 ######################")
            print("1. 展示所有学生信息")
            print("2. 添加学生")
            print("3. 删除学生")
            print("4. 修改学生")
            print("5. 退出系统")
            print("#######################################################")

            while True:
                choice = int(input("请输入功能对应的序号（1/2/3/4/5/6）: "))
                if choice == 1:
                    # print("调用展示所有学生信息的方法")
                    self.show_all_student()

                    break
                elif choice == 2:
                    # print("调用添加学生的方法")
                    self.add_student()

                    break
                elif choice == 3:
                    # print("调用删除学生的方法")
                    self.delete_student()

                    break
                elif choice == 4:
                    # print("调用修改学生的方法")
                    self.update_student()

                    break
                elif choice == 5:
                    print("退出学生管理系统！！！！！！！！！！！")
                    return
                else:
                    print("输入信息不合法，请重新输入！")

 

3、 程序入口文件 main.py

import manager



if __name__ == \'__main__\':

    manager_sys = manager.Manager()
    manager_sys.system_start()

 

4、 学生信息文件  students_info.json

[
  "学号": "0001", "姓名": "张三", "地址": "北京", "电话": "13244453359",
  "学号": "0002", "姓名": "张三2", "地址": "北京", "电话": "13244453359",
  "学号": "0003", "姓名": "张三3", "地址": "北京", "电话": "13244453359",
  "学号": "0004", "姓名": "张三4", "地址": "北京", "电话": "13244453359"
]

 

用python实现简易学生管理系统

以前用C++和Java写过学生管理系统，也想用Python试试，果然“人生苦短，我用Python”。用Python写的更加简洁，实现雏形也就不到100行代码。

下面上代码

  1 #!/usr/bin/python3
  2 # coding=utf-8
  3 
  4 
  5 # 实现switch-case语句
  6 class switch(object):
  7     def __init__(self, value):
  8         self.value = value
  9         self.fall = False
 10 
 11     def __iter__(self):
 12         """Return the match method once, then stop"""
 13         yield self.match
 14         raise StopIteration
 15 
 16     def match(self, *args):
 17         """Indicate whether or not to enter a case suite"""
 18         if self.fall or not args:
 19             return True
 20         elif self.value in args:  # changed for v1.5, see below
 21             self.fall = True
 22             return True
 23         else:
 24             return False
 25 
 26 
 27 class student:
 28     def __init__(self, name, age, id, grade):
 29         self.next = None
 30         self.name = name
 31         self.age = age
 32         self.id = id
 33         self.grade = grade
 34 
 35     def show(self):
 36         print(\'name:\', self.name, \' \', \'age:\', self.age, \' \', \'id:\', self.id, \' \', \'grade:\', self.grade)
 37 
 38 
 39 class stulist:
 40     def __init__(self):
 41         self.head = student(\'\', 0, 0, 0)
 42 
 43     def display(self):
 44         p = self.head.next
 45         if p==None:
 46             print(\'no student data in database!\')
 47         while p:
 48             p.show()
 49             p = p.next
 50 
 51 
 52     def insert(self):
 53         print(\'please enter:\')
 54         name = input(\'name:\')
 55         age = input(\'age:\')
 56         id = input(\'id:\')
 57         grade = input(\'grade:\')
 58         newstu = student(name, age, id, grade)
 59         p = self.head
 60         while p.next:
 61             p = p.next
 62         p.next = newstu
 63 
 64     def query(self):
 65         name = input(\'please enter the name you want to query:\')
 66         p = self.head.next
 67         if p==None:
 68             print(\'no such student in database\')
 69         while p:
 70             if p.name == name:
 71                 p.show()
 72             p = p.next
 73 
 74     def delete(self):
 75         name = input("please enter the student\'name you want to delete:")
 76         p = self.head.next
 77         pre = self.head
 78         while p:
 79             if p.name == name:
 80                 pre.next = p.next
 81                 p.next = None
 82                 print(\'the student info has been deleted!\')
 83                 break
 84             else:
 85                 pre = p
 86                 p = p.next
 87 
 88 
 89 def main():
 90     stulist1 = stulist()
 91     user_input = input(\'please enter the OPcode:\')
 92     while user_input:
 93         print(\'a--insert/b--display/c--query/h or \'\'--help/d--delete\')
 94         for case in switch(user_input):
 95             if case(\'a\'):
 96                 stulist1.insert()
 97                 user_input = input(\'please enter the OPcode:\')
 98                 break
 99             if case(\'b\'):
100                 stulist1.display()
101                 user_input = input(\'please enter the OPcode:\')
102                 break
103             if case(\'c\'):
104                 stulist1.query()
105                 user_input = input(\'please enter the OPcode:\')
106                 break
107             if case(\'d\'):
108                 stulist1.delete()
109                 user_input = input(\'please enter your OPcode:\')
110                 break
111             if case():  # default
112                 print(\'please enter the OPcode...\')
113                 user_input = input(\'please enter the OPcode:\')
114                 break
115 
116 
117 if __name__ == "__main__":
118     main()

 

下面是运行结果：