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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 do_serialize(self, line):
 """Serialize an entity into an RDF flavour"""

        opts = self.SERIALIZE_OPTS

        if not self.current:
            self._help_noontology()
            return

        line = line.split()
        g = self.current['graph']

        if not line:
            line = ['turtle']

        if line[0] not in opts:
            self.help_serialize()
            return

        elif self.currentEntity:
            self.currentEntity['object'].printSerialize(line[0])

        else:
            self._print(g.rdf_source(format=line[0]))