使用lxml编辑KML的内容

from lxml import etree

tree = etree.parse('path/to/kml/file.kml')

root = tree.getroot()

# 选择所有Placemark元素
placemarks = root.xpath('//Placemark')

# 遍历Placemark元素并修改内容
for placemark in placemarks:
    # 修改元素的文本内容
    name_element = placemark.find('name')
    name_element.text = 'New Name'

    # 添加新的元素
    description_element = etree.Element('description')
    description_element.text = 'New Description'
    placemark.append(description_element)

tree.write('path/to/modified/file.kml', encoding='utf-8', xml_declaration=True)