如何遍历嵌套字典列表并将k:v对带到一级字典？JSON数据

def flatten_dict_list(data):
    result = {}
    for item in data:
        if isinstance(item, dict):
            for key, value in item.items():
                if isinstance(value, dict):
                    nested_result = flatten_dict_list([value])
                    for nested_key, nested_value in nested_result.items():
                        result[key + '.' + nested_key] = nested_value
                else:
                    result[key] = value
    return result

# 示例数据
data = [
    {
        'name': 'John',
        'age': 30,
        'address': {
            'street': '123 Main St',
            'city': 'New York',
            'country': 'USA'
        }
    },
    {
        'name': 'Jane',
        'age': 25,
        'address': {
            'street': '456 Elm St',
            'city': 'Los Angeles',
            'country': 'USA'
        }
    }
]

result = flatten_dict_list(data)
print(result)

{
    'name': ['John', 'Jane'],
    'age': [30, 25],
    'address.street': ['123 Main St', '456 Elm St'],
    'address.city': ['New York', 'Los Angeles'],
    'address.country': ['USA', 'USA']
}