Python_xml

import xml.etree.cElementTree as ETgrandfather = 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 = '' # 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 = ''
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

<?xml version='1.0' encoding='utf-8'?>
<爷爷>
<大伯 性别="男">
<age 啦啦="木办法">45</age>
<work>次饭饭</work>
<child 性别="女">二丫</child>
</大伯>
<二伯 性别="男">
<age>44</age>
<work>打豆豆</work>
<child 性别="男">二蛋</child>
</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)