从现有JSON数组的嵌套键/值创建新的JSON数组

import json

def create_new_json_array(original_array, nested_key):
    new_array = []
    for item in original_array:
        nested_value = item.get(nested_key)
        if nested_value is not None:
            new_item = {nested_key: nested_value}
            new_array.append(new_item)
    return new_array

# 示例数据
original_array = [
    {"name": "Alice", "age": 25, "address": {"city": "New York", "country": "USA"}},
    {"name": "Bob", "age": 30, "address": {"city": "London", "country": "UK"}},
    {"name": "Charlie", "age": 35, "address": {"city": "Paris", "country": "France"}}
]

# 创建新的JSON数组，提取address键的值
new_json_array = create_new_json_array(original_array, "address")

# 打印新的JSON数组
print(json.dumps(new_json_array, indent=4))

[
    {
        "address": {
            "city": "New York",
            "country": "USA"
        }
    },
    {
        "address": {
            "city": "London",
            "country": "UK"
        }
    },
    {
        "address": {
            "city": "Paris",
            "country": "France"
        }
    }
]