如何将XML转换为忽略父子关系的哈希映射

import xml.etree.ElementTree as ET

def xml_to_hash(xml):
    root = ET.fromstring(xml)
    result = {}
    for element in root.iter():
        if len(element) == 0:
            if element.text:
                if element.tag not in result:
                    result[element.tag] = element.text
                else:
                    if type(result[element.tag]) == list:
                        result[element.tag].append(element.text)
                    else:
                        result[element.tag] = [result[element.tag], element.text]
    return result

<root>
  <person>
    <name>John</name>
    <age>30</age>
  </person>
  <person>
    <name>Jane</name>
    <age>25</age>
  </person>
</root>

{
  'name': ['John', 'Jane'],
  'age': ['30', '25']
}