如何将xml.gz格式转换为JSON？

import gzip
import xml.etree.ElementTree as ET
import json

def xmlgz_to_json(xmlgz_file):
    # 解压缩xml.gz文件
    with gzip.open(xmlgz_file, 'rb') as f:
        xml_data = f.read()

    # 解析XML文件
    root = ET.fromstring(xml_data)

    # 将XML数据转换为字典
    data = xml_to_dict(root)

    # 转换为JSON
    json_data = json.dumps(data)

    return json_data

def xml_to_dict(element):
    # 递归地将XML元素转换为字典
    if len(element) == 0:
        return element.text

    result = {}
    for child in element:
        child_data = xml_to_dict(child)
        if child.tag in result:
            if type(result[child.tag]) is list:
                result[child.tag].append(child_data)
            else:
                result[child.tag] = [result[child.tag], child_data]
        else:
            result[child.tag] = child_data

    return result

# 示例用法
xmlgz_file = 'example.xml.gz'
json_data = xmlgz_to_json(xmlgz_file)
print(json_data)