from xml.etree import ElementTree

attr1 = "A\nB\tC"
xmldoc1 = ElementTree.Element("xml", {"attr":attr1})
xmldoc2 = ElementTree.fromstring(ElementTree.tostring(xmldoc1))
attr2 = xmldoc2.get("attr")

print(
	attr1 == attr2, "\n"
	'1 -->"' + attr1 + '"', "\n"
	'2 -->"' + attr2 + '"'
)