- use ElementTree.parse to read the file (but this returns an ElementTree wrapper, not an Element; use getroot() to get the root element, or use findall() to pick out the right kind of subnodes).

- getchildren() is deprecated; to get all subelements, just loop over the parent container (i.e. “for node in detection” instead of “for node in detection.getchildren()”)

- node.find(tag).text can be written as node.findtext(tag) (however, the latter returns None if no matching element could be found, the former raises an AttributeError exception).

- you can use path syntax to pick out text from subelements (e.g. node.findtext(”gps-info/max-lon”) should work).  this is probably slower if you need more than a few subelement texts, though.

Cheers /F