使用python lxml.etree获取巨大的XML文件

pip install lxml

from lxml import etree

def parse_xml(xml_file):
    context = etree.iterparse(xml_file, events=('end',), tag=('tag_name',))
    for event, element in context:
        # 处理元素
        print(element.text)
        # 清空已处理的元素
        element.clear()

parse_xml('large_xml_file.xml')

import xml.sax

class LargeXMLHandler(xml.sax.ContentHandler):
    def __init__(self):
        super().__init__()

    def startElement(self, name, attrs):
        if name == 'tag_name':
            # 处理元素
            print(attrs.get('attribute_name', ''))

    def endElement(self, name):
        pass

    def characters(self, content):
        pass

xml.sax.parse('large_xml_file.xml', LargeXMLHandler())