如何从基于属性排序的对象列表中创建成对的“行”

class User:
    def __init__(self, name, purchase_amount):
        self.name = name
        self.purchase_amount = purchase_amount

# 创建用户列表
users = [
    User("Alice", 150),
    User("Bob", 200),
    User("Charlie", 100),
    User("David", 300),
    User("Eve", 250)
]

# 按 purchase_amount 排序
sorted_users = sorted(users, key=lambda user: user.purchase_amount)

# 创建成对的“行”
def create_pairs(sorted_list):
    pairs = []
    for i in range(0, len(sorted_list) - 1, 2):
        pairs.append((sorted_list[i], sorted_list[i + 1]))
    return pairs

pairs = create_pairs(sorted_users)

# 打印结果
for pair in pairs:
    print(f"Pair: ({pair[0].name}, {pair[0].purchase_amount}), ({pair[1].name}, {pair[1].purchase_amount})")