如何改变JSON文件的结构以创建嵌套

{
  "users": [
    {
      "id": 1,
      "name": "Alice",
      "age": 30
    },
    {
      "id": 2,
      "name": "Bob",
      "age": 25
    }
  ]
}

{
  "1": {
    "name": "Alice",
    "age": 30
  },
  "2": {
    "name": "Bob",
    "age": 25
  }
}

import json

# 原始JSON数据
original_data = {
  "users": [
    {
      "id": 1,
      "name": "Alice",
      "age": 30
    },
    {
      "id": 2,
      "name": "Bob",
      "age": 25
    }
  ]
}

# 创建新的嵌套结构
nested_data = {}
for user in original_data["users"]:
    nested_data[str(user["id"])] = {
        "name": user["name"],
        "age": user["age"]
    }

# 将新的嵌套结构写入JSON文件
with open('nested_users.json', 'w') as f:
    json.dump(nested_data, f, indent=4)

print("JSON文件结构已改变并保存为嵌套形式。")