循环中的嵌套字典

nested_dict = {
    'person1': {
        'name': 'Alice',
        'age': 25,
        'address': {
            'street': '123 Main St',
            'city': 'New York',
            'country': 'USA'
        }
    },
    'person2': {
        'name': 'Bob',
        'age': 30,
        'address': {
            'street': '456 Elm St',
            'city': 'San Francisco',
            'country': 'USA'
        }
    }
}

# 遍历嵌套字典
for person, details in nested_dict.items():
    print(f"Person: {person}")
    for key, value in details.items():
        if isinstance(value, dict):  # 判断值是否为字典类型
            print(f"\t{key}:")
            for sub_key, sub_value in value.items():
                print(f"\t\t{sub_key}: {sub_value}")
        else:
            print(f"\t{key}: {value}")

# 输出结果：
# Person: person1
#     name: Alice
#     age: 25
#     address:
#         street: 123 Main St
#         city: New York
#         country: USA
# Person: person2
#     name: Bob
#     age: 30
#     address:
#         street: 456 Elm St
#         city: San Francisco
#         country: USA