使用python从嵌套的Json中获取所需的数据

import json

json_data = '''
{
  "name": "John",
  "age": 30,
  "address": {
    "street": "123 Street",
    "city": "New York",
    "state": "NY"
  },
  "hobbies": ["reading", "coding", "gaming"]
}
'''

data = json.loads(json_data)

def get_value_from_json(json_obj, field):
    if isinstance(json_obj, dict):
        for key, value in json_obj.items():
            if key == field:
                return value
            elif isinstance(value, (dict, list)):
                result = get_value_from_json(value, field)
                if result is not None:
                    return result
    elif isinstance(json_obj, list):
        for item in json_obj:
            result = get_value_from_json(item, field)
            if result is not None:
                return result
    return None

street = get_value_from_json(data, "street")
print(street)  # 输出：123 Street