Python解析XMl

import xml.etree.ElementTree as ET
tree = ET.parse("xml_test")
root = tree.getroot()
# print(root.tag)#打印根标签

# #遍历xml文档
# for child in root:
#     print(child.tag,child.attrib)
#     for i in child:
#         print(i.tag,i.text)


# 修改
# for node in root.iter('price'):
#     new_price = node.text
#     print(new_price)
#     node.text = "￥"+str(new_price)
#     node.set("updated","yes")
# tree.write("xml_test")

#删除
for node in root.findall('food'):
    kind = str(node.find('name').text).startswith('S')
    print(kind)
    if kind:
        root.remove(node)
tree.write("xml_test")

<breakfast_menu>
    <food>
        <name>Belgian Waffles</name>
        <price>$5.95</price>
        <description>
        two of our famous Belgian Waffles with plenty of real maple syrup
        </description>
        <calories>650</calories>
    </food>
    <food>
        <name>Berry-Berry Belgian Waffles</name>
        <price>$8.95</price>
        <description>
        light Belgian waffles covered with an assortment of fresh berries and whipped cream
        </description>
        <calories>900</calories>
    </food>
    <food>
        <name>French Toast</name>
        <price>$4.50</price>
        <description>
        thick slices made from our homemade sourdough bread
        </description>
        <calories>600</calories>
    </food>
    <food>
        <name>Homestyle Breakfast</name>
        <price>$6.95</price>
        <description>
        two eggs, bacon or sausage, toast, and our ever-popular hash browns
        </description>
        <calories>950</calories>
    </food>
</breakfast_menu>