如何从复杂的嵌套json格式中获取所需的json输出？

import json

# 假设原始JSON数据存储在变量data中
data = '''
{
  "name": "John",
  "age": 30,
  "address": {
    "street": "123 Main St",
    "city": "New York",
    "state": "NY"
  },
  "hobbies": ["reading", "coding", "gaming"],
  "friends": [
    {"name": "Alice", "age": 28},
    {"name": "Bob", "age": 32}
  ]
}
'''

# 解析JSON
parsed_data = json.loads(data)

# 导航至所需数据并提取
name = parsed_data["name"]
street = parsed_data["address"]["street"]
hobbies = parsed_data["hobbies"]
friend_names = [friend["name"] for friend in parsed_data["friends"]]

# 构建所需的JSON输出
output = {
  "name": name,
  "address": {
    "street": street
  },
  "hobbies": hobbies,
  "friend_names": friend_names
}

# 将输出格式化为JSON字符串
output_json = json.dumps(output)

print(output_json)