如何在Python中从复杂的字典中生成xml？

import xml.etree.ElementTree as ET

def dict_to_xml(dictionary, root_name):
    root = ET.Element(root_name)
    for key, value in dictionary.items():
        if isinstance(value, dict):
            child = dict_to_xml(value, key)
            root.append(child)
        else:
            child = ET.Element(key)
            child.text = str(value)
            root.append(child)
    return root

def generate_xml(dictionary, root_name, file_path):
    root = dict_to_xml(dictionary, root_name)
    tree = ET.ElementTree(root)
    tree.write(file_path, encoding='utf-8', xml_declaration=True)

# 示例字典
data = {
    'person': {
        'name': 'John',
        'age': 30,
        'address': {
            'street': '123 Street',
            'city': 'New York'
        }
    }
}

# 生成XML文件
generate_xml(data, 'data', 'output.xml')