从JSON中删除子项并生成只有父项的JSON吗？

import json

def remove_child_items(json_data):
    if isinstance(json_data, dict):
        for key in list(json_data.keys()):
            if isinstance(json_data[key], dict) or isinstance(json_data[key], list):
                remove_child_items(json_data[key])
            else:
                del json_data[key]
    elif isinstance(json_data, list):
        for item in json_data:
            remove_child_items(item)

# 原始的JSON数据
original_json = '''
{
  "parent1": {
    "child1": "value1",
    "child2": "value2"
  },
  "parent2": {
    "child3": "value3",
    "child4": "value4"
  }
}
'''

# 解析JSON数据
parsed_json = json.loads(original_json)

# 删除子项
remove_child_items(parsed_json)

# 生成只有父项的JSON数据
result_json = json.dumps(parsed_json)

print(result_json)

{"parent1": {}, "parent2": {}}