将原始json转换为与d3兼容的数据集

import json

# 原始JSON数据
raw_json = '''
{
  "name": "Root",
  "children": [
    {
      "name": "Node 1",
      "value": 10
    },
    {
      "name": "Node 2",
      "value": 20,
      "children": [
        {
          "name": "Node 2.1",
          "value": 15
        },
        {
          "name": "Node 2.2",
          "value": 25
        }
      ]
    }
  ]
}
'''

# 解析JSON数据
data = json.loads(raw_json)

# 转换数据格式
def convert_data(node):
    converted = {
        "name": node["name"],
        "value": node.get("value", 0)
    }
    if "children" in node:
        converted["children"] = [convert_data(child) for child in node["children"]]
    return converted

converted_data = convert_data(data)

# 构建数据集
dataset = {
    "name": "flare",
    "children": [converted_data]
}

# 打印转换后的数据集
print(json.dumps(dataset, indent=2))