会员管理系统代码

会员管理系统的代码通常涉及多个方面，包括用户注册、登录、信息管理、权限控制等。以下是一个简单的Python示例，使用基本的面向对象编程概念。

python
class Member:
    def __init__(self, username, password, email):
        self.username = username
        self.password = password
        self.email = email
        self.is_logged_in = False

    def login(self, entered_password):
        if entered_password == self.password:
            self.is_logged_in = True
            print(f"Welcome, {self.username}!")
        else:
            print("Login failed. Incorrect password.")

    def logout(self):
        self.is_logged_in = False
        print(f"Goodbye, {self.username}!")

    def update_email(self, new_email):
        self.email = new_email
        print(f"Email updated to: {self.email}")


class MembershipSystem:
    def __init__(self):
        self.members = []

    def register_member(self, username, password, email):
        new_member = Member(username, password, email)
        self.members.append(new_member)
        print(f"Member {username} registered successfully.")

    def login_member(self, username, password):
        for member in self.members:
            if member.username == username:
                member.login(password)
                break
        else:
            print("Member not found.")

    def logout_member(self, username):
        for member in self.members:
            if member.username == username:
                member.logout()
                break
        else:
            print("Member not found.")

    def update_member_email(self, username, new_email):
        for member in self.members:
            if member.username == username:
                member.update_email(new_email)
                break
        else:
            print("Member not found.")


# 使用示例
membership_system = MembershipSystem()

membership_system.register_member("user1", "password123", "user1@example.com")
membership_system.login_member("user1", "password123")
membership_system.update_member_email("user1", "newemail@example.com")
membership_system.logout_member("user1")

理解你的需求，我会为你提供一个简单的基于文件存储的版本，但实际应用中更安全和可扩展的方式是使用数据库。这里仍然使用基本的文件操作来保存会员信息。

python
import json

class Member:
    def __init__(self, username, password, email):
        self.username = username
        self.password = password
        self.email = email
        self.is_logged_in = False

    def to_dict(self):
        return {
            'username': self.username,
            'password': self.password,
            'email': self.email,
            'is_logged_in': self.is_logged_in
        }

    @classmethod
    def from_dict(cls, data):
        member = cls(data['username'], data['password'], data['email'])
        member.is_logged_in = data['is_logged_in']
        return member

class MembershipSystem:
    def __init__(self, data_file='members.json'):
        self.data_file = data_file
        self.members = self.load_members()

    def load_members(self):
        try:
            with open(self.data_file, 'r') as file:
                data = json.load(file)
                return [Member.from_dict(member_data) for member_data in data]
        except FileNotFoundError:
            return []

    def save_members(self):
        with open(self.data_file, 'w') as file:
            data = [member.to_dict() for member in self.members]
            json.dump(data, file, indent=2)

    def register_member(self, username, password, email):
        new_member = Member(username, password, email)
        self.members.append(new_member)
        self.save_members()
        print(f"Member {username} registered successfully.")

    def login_member(self, username, password):
        for member in self.members:
            if member.username == username and member.password == password:
                member.is_logged_in = True
                self.save_members()
                print(f"Welcome, {username}!")
                break
        else:
            print("Login failed. Member not found or incorrect password.")

    def logout_member(self, username):
        for member in self.members:
            if member.username == username:
                member.is_logged_in = False
                self.save_members()
                print(f"Goodbye, {username}!")
                break
        else:
            print("Member not found.")

    def update_member_email(self, username, new_email):
        for member in self.members:
            if member.username == username:
                member.email = new_email
                self.save_members()
                print(f"Email updated to: {new_email}")
                break
        else:
            print("Member not found.")

# 使用示例
membership_system = MembershipSystem()

membership_system.register_member("user1", "password123", "user1@example.com")
membership_system.login_member("user1", "password123")
membership_system.update_member_email("user1", "newemail@example.com")
membership_system.logout_member("user1")

这个示例中，MembershipSystem 类包含了读取和保存会员信息的方法，并通过文件操作实现。这是一个基础的文件存储版本，实际应用中可能需要更复杂的结构和安全性考虑。