(question) Some elegant way to sort elements in the order they appear in the xml file?

[mikamiel]

Is there some elegant way etree provides to sort elements in the order they appear in the xml file?
It's a common case while working with docx OOXML to be sure that some elements come one after another even if they are on different level of depth in the tree.
I'd be just happy to go without recursive traverse and nested loops.