如何获取JSON文档中所有属性的列表？

import json

def get_all_properties(json_data):
    properties = []

    def traverse(obj):
        if isinstance(obj, dict):
            for key, value in obj.items():
                properties.append(key)
                traverse(value)
        elif isinstance(obj, list):
            for item in obj:
                traverse(item)

    traverse(json_data)
    return properties

# 示例JSON文档
json_doc = '''
{
  "name": "John",
  "age": 30,
  "address": {
    "street": "123 Main St",
    "city": "New York"
  },
  "hobbies": ["reading", "traveling"]
}
'''

# 解析JSON文档
data = json.loads(json_doc)

# 获取所有属性的列表
all_properties = get_all_properties(data)
print(all_properties)

['name', 'age', 'address', 'street', 'city', 'hobbies']