In this case you have to make sure you escape properly & and < at least (plus " in attribute values if you have attributes and use " to quote them). Writing XML is a lot simpler than parsing it, but I still would hesitate to recommend using print to a newcomer. There is enough broken XML floating around, no need to risk adding some more.
Oh, and of course you need to make sure that the encoding of your data is OK (pure ascii or utf-8) or you need to add an XML declaration with the proper encoding. And most modules won't help you much there.
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