如何根据先前的标记值从连续的xml标记属性中提取数据

import xml.etree.ElementTree as ET

def extract_data_from_xml(xml_file, previous_tag):
    tree = ET.parse(xml_file)
    root = tree.getroot()

    data = []
    found_previous_tag = False

    for element in root.iter():
        if element.tag == previous_tag:
            found_previous_tag = True
        elif found_previous_tag:
            data.append(element.get('属性名'))

    return data

# 调用示例
xml_file = 'example.xml'
previous_tag = '先前的标记值'
data = extract_data_from_xml(xml_file, previous_tag)
print(data)