是的，这是一个挑战，我也遇到了同样的问题，
而不是完全在RAM中加载文件。你可以流文件。对于XML文件流，你可以使用python的ElementTree.

import xml.etree.ElementTree as ET

def process_element(elem):
    # your code goes here
    print(elem.tag, elem.attrib)

file_path = 'demo.xml'

# Create a parser
context = ET.iterparse(file_path, events=('start', 'end'))

# Iterate the file
for event, elem in context:
    if event == 'end':  
        process_element(elem)
        elem.clear()  # Free up memory

# Must not forget
context.root.clear()

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