Python XML模块数据解析与生成利器的使用掌握

<!-- example.xml -->
<root>
    <person>
        <name>John Doe</name>
        <age>30</age>
    </person>
    <person>
        <name>Jane Doe</name>
        <age>25</age>
    </person>
</root>

import xml.etree.ElementTree as ET
# 解析XML文件
tree = ET.parse('example.xml')
root = tree.getroot()
# 遍历XML元素
for person in root.findall('person'):
    name = person.find('name').text
    age = person.find('age').text
    print(f"Name: {name}, Age: {age}")

import xml.etree.ElementTree as ET
# 创建根元素
root = ET.Element('root')
# 添加子元素
person1 = ET.SubElement(root, 'person')
name1 = ET.SubElement(person1, 'name')
name1.text = 'John Doe'
age1 = ET.SubElement(person1, 'age')
age1.text = '30'
person2 = ET.SubElement(root, 'person')
name2 = ET.SubElement(person2, 'name')
name2.text = 'Jane Doe'
age2 = ET.SubElement(person2, 'age')
age2.text = '25'
# 创建ElementTree对象
tree = ET.ElementTree(root)
# 将XML数据写入文件
tree.write('generated.xml')

import xml.etree.ElementTree as ET
# 带命名空间的XML示例
xml_data = '''
<root xmlns:ns="http://example.com">
    <ns:person>
        <ns:name>John Doe</ns:name>
        <ns:age>30</ns:age>
    </ns:person>
</root>
'''
# 解析带命名空间的XML
root = ET.fromstring(xml_data)
# 获取带命名空间的元素
person = root.find('.//{http://example.com}person')
name = person.find('{http://example.com}name').text
age = person.find('{http://example.com}age').text
print(f"Name: {name}, Age: {age}")

import xml.etree.ElementTree as ET

# 含CDATA的XML示例
xml_data = '''
<root>
    <description><![CDATA[This is a CDATA section.]]></description>
</root>
'''

# 解析含CDATA的XML
root = ET.fromstring(xml_data)
description = root.find('description').text

print(f"Description: {description}")

import xml.etree.ElementTree as ET

try:
    # 尝试解析XML
    tree = ET.parse('nonexistent.xml')
except ET.ParseError as e:
    print(f"Error parsing XML: {e}")

import xml.etree.ElementTree as ET
# 解析配置文件
tree = ET.parse('config.xml')
root = tree.getroot()
# 获取配置项
server_address = root.find('server').find('address').text
port = root.find('server').find('port').text
print(f"Server Address: {server_address}, Port: {port}")

import xml.etree.ElementTree as ET
import requests

# 发送请求并解析XML响应
response = requests.get('https://example.com/api/data')
root = ET.fromstring(response.text)

# 提取数据
data_list = [elem.text for elem in root.findall('.//data')]
print(f"Received Data: {data_list}")

import xml.etree.ElementTree as ET
# 解析日志文件
tree = ET.parse('log.xml')
root = tree.getroot()
# 遍历日志条目
for entry in root.findall('log_entry'):
    timestamp = entry.find('timestamp').text
    message = entry.find('message').text
    print(f"Timestamp: {timestamp}, Message: {message}")

import xml.etree.ElementTree as ET
# 生成XML数据
root = ET.Element('root')
element = ET.SubElement(root, 'data')
element.text = 'Hello, XML!'
# 创建ElementTree对象
tree = ET.ElementTree(root)
# 将XML数据写入文件
tree.write('data.xml')