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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def empty_mets():
 """ Create an empty METS file from bundled template. """

        tpl = METS_XML_EMPTY.decode('utf-8')
        tpl = tpl.replace('{{ VERSION }}', VERSION)
        tpl = tpl.replace('{{ NOW }}', '%s' % datetime.now())
        return OcrdMets(content=tpl.encode('utf-8'))