聚爱财互联网金融

# 用户认证
def authenticate_user(username, password):
    # 假设从数据库中获取用户信息
    user = get_user_from_db(username)
    if user and user['password'] == password:
        return True
    return False

# 交易处理
def process_transaction(sender_id, receiver_id, amount):
    if not authenticate_user(sender_id, get_password_from_db(sender_id)):
        return "Authentication failed"
    
    if check_balance(sender_id, amount):
        deduct_balance(sender_id, amount)
        add_balance(receiver_id, amount)
        return "Transaction successful"
    else:
        return "Insufficient balance"

# 假设的数据库操作函数
def get_user_from_db(username):
    # 从数据库中获取用户信息
    pass

def get_password_from_db(username):
    # 从数据库中获取用户密码
    pass

def check_balance(user_id, amount):
    # 检查用户余额
    pass

def deduct_balance(user_id, amount):
    # 扣除用户余额
    pass

def add_balance(user_id, amount):
    # 增加用户余额
    pass