python读写xml文件_Jingle-stu_python xml 读写

irpas 02-07 4308

1.python创建xml 使用xml.etree.ElementTree来操作xml 创建节点：root = ET.Element('root'， attribute),

????????????????其中， attribute是属性字典，需要属性时可以添加

创建文档：tree = ET.ElementTree(root)设置文本值：element.text = 'default'设置属性：element.set('age', str(i))添加节点：root.append(element)写入文档：tree.write('*.xml', encoding='utf-8', xml_declaration=True?

? ? ? ? ? ? ? ?其中，xml_declaration=True表示对xml声明，<?xml version='1.0' encoding='utf-8'?>

示例：

import xml.etree.ElementTree as ET from xml.etree.ElementTree import Element root = ET.Element('Root') tree = ET.ElementTree(root) name = Element("name", {'id': 'id2', 'order': 'order2'}) name.text = "xiaoming" age = Element("age") age.text = "12" gender = Element("gender") gender.text = "男" root.append(name) root.append(age) root.append(gender) tree.write("1.xml", encoding='utf-8', xml_declaration=True)

结果如下：

但是此时的xml文件和我们平时常见的格式不太一样，如何转变成标准的格式呢？?

思路就是在每个节点之后添加"\n\t"

代码如下：

import xml.etree.ElementTree as ET from xml.etree.ElementTree import Element def __indent(elem, level=0): i = "\n" + level*"\t" if len(elem): if not elem.text or not elem.text.strip(): elem.text = i + "\t" if not elem.tail or not elem.tail.strip(): elem.tail = i for elem in elem: __indent(elem, level+1) if not elem.tail or not elem.tail.strip(): elem.tail = i else: if level and (not elem.tail or not elem.tail.strip()): elem.tail = i root = ET.Element('Root') tree = ET.ElementTree(root) name = Element("name", {'id': 'id2', 'order': 'order2'}) name.text = "xiaoming" age = Element("age") age.text = "12" gender = Element("gender") gender.text = "男" root.append(name) root.append(age) root.append(gender) __indent(root) tree.write("1.xml", encoding='utf-8', xml_declaration=True)

结果如下：

2.python读取/修改xml? tree = ET.parse(xml_path) 读取xml文档 root = tree.getroot() 获取根节点

示例：读取1.xml的内容，并添加属性，最后写入2.xml

import xml.etree.ElementTree as ET from xml.etree.ElementTree import Element tree = ET.parse("1.xml") root = tree.getroot() for child in root: print("tag:", child.tag) print("tag:", child.text) print("attrib:", child.attrib) child.set("set:", "设置属性") tree.write("2.xml", encoding="utf-8", xml_declaration=True) """ tag: name tag: xiaoming attrib: {'id': 'id2', 'order': 'order2'} tag: age tag: 12 attrib: {} tag: gender tag: 男 attrib: {} """

2.xml的内容如下：

?THANKS A LOT!

参考链接：https://blog.csdn.net/hu694028833/article/details/81089959