Python_xml模块_用ElementTree解析xml

import xml.etree.cElementTree as ET

grandfather = ET.Element(‘爷爷‘)        # 根节点
uncle = ET.SubElement(grandfather, ‘大伯‘, attrib={‘性别‘: ‘男‘})    # 子节点
age = ET.SubElement(uncle, ‘age‘, attrib={‘啦啦‘: ‘木办法‘})    # uncle的子节点
work = ET.SubElement(uncle, ‘work‘)   # age 与work同级
child = ET.SubElement(uncle, ‘child‘, attrib={‘性别‘: ‘女‘})
age.text = ‘45‘     # 给age和name设值
work.text = ‘次饭饭‘
child.text = ‘二丫‘
uncle2 = ET.SubElement(grandfather, ‘二伯‘, attrib={‘性别‘: ‘男‘})
age = ET.SubElement(uncle2, ‘age‘)
work = ET.SubElement(uncle2, ‘work‘)   # work 与age同级
child = ET.SubElement(uncle2, ‘child‘, attrib={‘性别‘: ‘男‘})
age.text = ‘44‘
work.text = ‘打豆豆‘
child.text = ‘二蛋‘


et = ET.ElementTree(grandfather)      # 生成文档对象
et.write(‘test.xml‘, encoding=‘utf-8‘, xml_declaration=True)    # 注释声明的xml所用编码
# ET.dump(grandfather)   # 打印生成格式

‘1.0‘ encoding=‘utf-8‘?>

    "男">
        "木办法">45
        次饭饭"女">二丫大伯>
    "男">
        44
        打豆豆"男">二蛋二伯>
爷爷>

#######运行结果本身没有缩进#########

import xml.etree.cElementTree as ET
tree = ET.parse(‘test.xml‘)            # 解析文件
root = tree.getroot()                # 遍历节点
print(root.tag)                      # x.tag 获取根节点名字

# 遍历所有的内容
for child in root:
    print(child.tag, child.attrib)       # 打印节点，属性
    for i in child:
        print(‘--->‘, i.tag, i.text)     # 打印节点，节点里的值（内容）

# # 取一个节点的值
# for node in root.iter(‘work‘):        # 遍历单独某一个节点里的值（过滤year值）
#     print(node.tag, node.text)
#
# # 修改（更新）一个某个节点（某个值）
# for node in root.iter(‘age‘):
#     new_age = int(node.text) + 1      # 新的年份 +1
#     node.text = str(new_age)
#     node.set(‘感叹：‘, ‘老了！‘)        # 设置（添加）属性
# # tree.write(‘xmltext.xml‘, encoding=‘utf-8‘,xml_declaration=True)      # 更新文件


# 删除某一个节点

# for uncle in root.findall(‘uncle‘):         # findall() 把所有的uncle找到
#     age = int(uncle.find(‘age‘))   # 找到age下的内容转换为int类型
#     if age > 44:
#         root.remove(uncle)     # 如果满足条件的节点则删除
# tree.write(‘xtext.xml‘, encoding=‘utf-8‘, xml_declaration=True)