如何将结构的实例添加到哈希表中？我不断地得到一个引用的列表

# 创建哈希表
hash_table = {}

# 定义结构
class MyStructure:
    def __init__(self, name, age):
        self.name = name
        self.age = age

# 创建结构的实例
instance1 = MyStructure("John", 25)
instance2 = MyStructure("Jane", 30)

# 生成哈希码
hash_code1 = hash(instance1.name)
hash_code2 = hash(instance2.name)

# 添加实例到哈希表
hash_table[hash_code1] = instance1
hash_table[hash_code2] = instance2

print(hash_table)

{-1824139282: <__main__.MyStructure object at 0x7f8ff120b220>, -1789083801: <__main__.MyStructure object at 0x7f8ff120b250>}