从python中的大量xml文件中提取信息的最有效方法是什么？

I have a directory full (~10³, 10⁴) of XML files from which I need to extract the contents of several fields. I've tested different xml parsers, and since I don't need to validate the contents (expensive) I was thinking of simply using xml.parsers.expat (the fastest one) to go through the files, one by one to extract the data. ) of XML file