+import json + + +student_data = [] +def add_student():

• id = input("请输入学员学号: ")
• student_id = input("请输入学员姓名: ")
• gender = input("请输入性别: ")
• tel = input("请输入电话号码：")
• student_info = {
• "学号": id,
• "姓名": student_id,
• "性别": gender,
• "电话号码":tel
• }
• student_data.append(student_info)
• print("学员信息添加成功！")

+def delete_student():

• student_id = input("请输入要删除的学号: ")
• for student in student_data:
• if student["学号"] == student_id:
• student_data.remove(student)
• print("学员信息删除成功！")
• break
• else:
• print("未找到该学号的学员信息。")

+def modify_student():

• student_id = input("请输入要修改的学号: ")
• for student in student_data:
• if student["学号"] == student_id:
• name = input("请输入新的姓名: ")
• age = input("请输入新的性别: ")
• tel = input("电话号码: ")
• student["姓名"] = name
• student["性别"] = age
• student["电话号码"] = tel
• print("学员信息修改成功！")
• break
• else:
• print("未找到该学号的学员信息。")

+def select():

• student_id = input("请输入要修改的学号: ")
• for student in student_data:
• if student["学号"] == student_id:
• print(student["学号"],student["姓名"],student["性别"],student["电话号码"])
• break
• else:
• print("未找到该学号的学员信息。")

+# 定义函数：保存学员信息到文件 +def save_student_data():

• with open("student_data.json", "w") as file:
• json.dump(student_data, file)
• print("学员信息已保存！")

+def load_student_data():

• try:
• with open("student_data.json", "r") as file:
• data = json.load(file)
• student_data.extend(data)
• print("学员信息已加载！")
• except FileNotFoundError:
• print("未找到学员信息文件。")

+# 主程序 +load_student_data() + +while True:

• print("\n学生信息管理系统")
• print("1. 添加学员信息")
• print("2. 删除学员信息")
• print("3. 修改学员信息")
• print("4. 保存学员信息")
• print("5. 查询学员信息")
• print("6. 显示学员信息")
• print("7. 退出系统")
• choice = input("请输入操作序号: ")
• if choice == "1":
• add_student()
• elif choice == "2":
• delete_student()
• elif choice == "3":
• modify_student()
• elif choice == "4":
• save_student_data()
• elif choice == "5":
• select()
• elif choice == "6":
• print("学员信息如下:")
• for student in student_data:
• print("学号:", student["学号"])
• print("姓名:", student["姓名"])
• print("性别:", student["性别"])
• print("电话号码:", student["电话号码"])
• print("--------------------------")
• elif choice == "7":
• save_student_data()
• print("感谢使用学生信息管理系统，再见！")
• break
• else:
• print("无效的操作序号，请重新输入。")