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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 normalized_operator(self):
 """Get the operator as one of LT, GT, LTE, or GTE."""

        if self._operator.lower() == "lt" or self._operator == "<":
            return u"LT"
        elif self._operator.lower() == "gt" or self._operator == ">":
            return u"GT"
        elif self._operator.lower() == "lte" or self._operator == "<=":
            return u"LTE"
        elif self._operator.lower() == "gte" or self._operator == ">=":
            return u"GTE"