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import json
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def main_menu():
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print("请选择如下功能：")
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print("1：添加学员：")
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print("2：删除学员：")
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print("3：修改学员信息")
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print("4：查询学员信息")
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print("5：显示所有学员信息")
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print("6：保存学员信息")
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print("7:退出系统")
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print("请输入你需要的功能序号")
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def add_student(students):
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name = input("请输入你的姓名: ")
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age = input("请输入你的性别: ")
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grade = input("请输入你的电话: ")
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student = { name, age, grade}
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students.append(student)
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print("学生信息添加成功！")
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def delete_student(students):
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name = input("请输入要删除的学生姓名: ")
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for student in students:
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if student["姓名"] == name:
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students.remove(student)
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print("学生信息删除成功！")
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break
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else:
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print("未找到该学生信息！")
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def modify_student(students):
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name = input("请输入要修改的学生姓名: ")
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for student in students:
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if student["姓名"] == name:
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new_name = input("请输入学员姓名: ")
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new_age = input("请输入学员性别: ")
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new_grade = input("请输入学员手机号: ")
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student["姓名"] = new_name
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student["性别"] = new_age
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student["手机号"] = new_grade
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print("修改学员信息成功！")
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break
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else:
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print("未找到该学生信息！")
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def save_students(students):
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with open("students.json", "w") as file:
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json.dump(students, file)
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print("学生信息保存成功！")
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def load_students():
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try:
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with open("students.json", "r") as file:
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students = json.load(file)
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except FileNotFoundError:
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students = []
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return students
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def query_student(students):
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name = input("请输入要查询的学生姓名: ")
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for student in students:
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if student["姓名"] == name:
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print("学生信息如下:")
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print("姓名:", student["姓名"])
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print("性别:", student["性别"])
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print("手机号:", student["手机号"])
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break
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else:
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print("未找到该学生信息！")
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def display_students(students):
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if not students:
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print("暂无学生信息！")
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else:
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print("所有学生信息如下:")
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for student in students:
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print("姓名:", student["姓名"])
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print("性别:", student["性别"])
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print("手机号:", student["手机号"])
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def main():
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students = load_students()
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while True:
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main_menu()
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option = input("请输入你需要的功能序号: ")
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if option == "1":
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add_student(students)
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elif option == "2":
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delete_student(students)
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elif option == "3":
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modify_student(students)
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elif option == "4":
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save_students(students)
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elif option == "5":
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query_student(students)
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elif option == "6":
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display_students(students)
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elif option == "0":
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break
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else:
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print("无效的选项，请重新输入！")
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