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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 _getTrafficClassAndFlowLabel(self):
 """Page 6, draft feb 2011 """

        if self.tf == 0x0:
            return (self.tc_ecn << 6) + self.tc_dscp, self.flowlabel
        elif self.tf == 0x1:
            return (self.tc_ecn << 6), self.flowlabel
        elif self.tf == 0x2:
            return (self.tc_ecn << 6) + self.tc_dscp, 0
        else:
            return 0, 0