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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 startswith(self, other):
 """ Test if this range starts with `other`. `other` may be either range or scalar. True True :param other: Range or scalar to test. :return: ``True`` if this range starts with `other`, otherwise ``False`` :raises TypeError: If `other` is of the wrong type. """


        if self.is_valid_range(other):
            if self.lower_inc == other.lower_inc:
                return self.lower == other.lower
            else:
                return False
        elif self.is_valid_scalar(other):
            if self.lower_inc:
                return self.lower == other
            else:
                return False
        else:
            raise TypeError(
                "Unsupported type to test for starts with '{}'".format(
                    other.__class__.__name__))