Python中如何解析XML文件？XML文件过大时如何高效解析？

import xml.etree.ElementTree as ET

def parse_xml_file(filename):
    tree = ET.parse(filename)
    root = tree.getroot()

    for element in root.findall(".//item"): # 假设我们要查找所有item元素
        title = element.find("title").text
        link = element.find("link").text
        print(f"Title: {title}, Link: {link}")

# parse_xml_file("your_xml_file.xml")

from lxml import etree

def parse_xml_lxml(filename):
    tree = etree.parse(filename)
    root = tree.getroot()

    for element in root.xpath("//item"):
        title = element.xpath("./title/text()")[0]
        link = element.xpath("./link/text()")[0]
        print(f"Title: {title}, Link: {link}")

# parse_xml_lxml("your_xml_file.xml")

import xml.etree.ElementTree as ET

def iterparse_xml(filename):
    context = ET.iterparse(filename, events=("start", "end"))
    context = iter(context) # Make it iterable
    event, root = next(context) # Get the root element

    for event, element in context:
        if event == "end" and element.tag == "item":
            title = element.find("title").text
            link = element.find("link").text
            print(f"Title: {title}, Link: {link}")
            root.clear() # Clear the element after processing to save memory

# iterparse_xml("your_large_xml_file.xml")