python基礎入門之十八 —— 面向對象版學員管理系統

 main.py:

from StudentMannager.manager import *

if __name__ == '__main__':
    student_manager = Manager()
    student_manager.run()

manager.py:

from StudentMannager.student import *

class Manager(object):
    def __init__(self):
        self.stu_list = []

    # 一. 程式入口函數
    def run(self):
        # 1. 載入文件裡面的學員數據
        self.load_student()
        while True:
            # 2. 顯示功能菜單
            self.show_menu()
            # 3. 用戶輸入目標功能序號
            menu_num = int(input('請輸入您需要的功能序號：'))
            # 4. 根據用戶輸入的序號執行不同的功能 -- 如果用戶輸入1，執行添加
            if menu_num == 1:
                # 添加學員
                self.add_student()
            elif menu_num == 2:
                # 刪除學員
                self.del_student()
            elif menu_num == 3:
                # 修改學員信息
                self.modify_student()
            elif menu_num == 4:
                # 查詢學員信息
                self.search_student()
            elif menu_num == 5:
                # 顯示所有學員信息
                self.show_student()
            elif menu_num == 6:
                # 保存學員信息
                self.save_student()
            elif menu_num == 7:
                # 退出系統 -- 退出迴圈
                break

    # 二. 系統功能函數
    # 2.1 顯示功能菜單 -- 列印序號的功能對應關係 -- 靜態
    @staticmethod
    def show_menu():
        print('請選擇如下功能：')
        print('1:添加學員')
        print('2:刪除學員')
        print('3:修改學員信息')
        print('4:查詢學員信息')
        print('5:顯示所有學員信息')
        print('6:保存學員信息')
        print('7:退出系統')

    # 2.2 添加學員
    def add_student(self):
        name = input("name = ")
        gender = input("gender = ")
        tel = input("tel = ")
        stu = student(name,gender,tel)
        self.stu_list.append(stu)
        print('添加成功')

    # 2.3 刪除學員
    def del_student(self):
        del_name = input("del_name = ")
        for i in self.stu_list:
            if del_name == i.name:
                self.stu_list.remove(i)
                break
        else:
            print('查無此人！')
        print('刪除成功')

    # 修改學員信息
    def modify_student(self):
        modify_name = input("modify_name = ")
        for i in self.stu_list:
            if modify_name == i.name:
                i.gender = input(f'{i.name}\'s gender = ')
                i.tel = input(f'{i.name}\'s tel = ')
                print('修改成功')
                break
        else:
            print('查無此人！')

    # 查詢學員信息
    def search_student(self):
        search_name = input("search_name = ")
        for i in self.stu_list:
            if search_name == i.name:
                print(i)
                break
        else:
            print('查無此人！')

    # 顯示所有學員信息
    def show_student(self):
        print('姓名\t年齡\t電話\t')
        for i in self.stu_list:
            print(f'{i.name}\t{i.gender}\t{i.tel}')
        print('-'*20)

    # 保存學員信息
    def save_student(self):
        try:
            f = open('student.data','w')
            new_list = [i.__dict__ for i in self.stu_list]  # __dict__ 返回類內部所有的屬性和方法對應的字典
print(new_list)
            f.write(str(new_list))
            f.close()
        except Exception as result:
            print(result)

    # 載入學員信息
    def load_student(self):
        try:
            f = open('student.data','r')
        except:
            f = open('student.data', 'w')
        else:
            data = f.read()
            new_list = eval(data)  # eval() 函數用來執行一個字元串表達式，並返回表達式的值。
            self.stu_list = [student(i['name'],i['gender'],i['tel']) for i in new_list]
        finally:
            f.close()

student.py:

class student(object):
    def __init__(self,name,gender,tel):
        self.name = name
        self.gender = gender
        self.tel = tel

    def __str__(self):
        return f'name = {self.name},gender = {self.gender},tel = {self.tel}'