-#!/usr/bin/env python
+#!/usr/bin/env python3
-from lxml import etree
+import xml.dom.minidom
import sys
-doc = etree.parse(open(sys.argv[1]))
-print etree.tostring(doc, pretty_print=True)
+doc = xml.dom.minidom.parse(sys.stdin)
+doc.writexml(sys.stdout, addindent=" ", newl="\n")