xml到json的转换-行项目和行项目的[[]]的附加方括号

import xml.etree.ElementTree as ET
import json

def xml_to_json(xml_string):
    root = ET.fromstring(xml_string)
    json_data = {}
    json_data[root.tag] = element_to_dict(root)
    return json.dumps(json_data)

def element_to_dict(element):
    if len(element) == 0:
        return element.text
    result = {}
    for child in element:
        child_data = element_to_dict(child)
        if child.tag in result:
            if isinstance(result[child.tag], list):
                result[child.tag].append(child_data)
            else:
                result[child.tag] = [result[child.tag], child_data]
        else:
            result[child.tag] = child_data
    return result