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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 specify_data_set(self, x_input, y_input, sort_data=False):
 """ Fully define data by lists of x values and y values. This will sort them by increasing x but remember how to unsort them for providing results. Parameters x_input : iterable list of floats that represent x y_input : iterable list of floats that represent y(x) for each x sort_data : bool, optional If true, the data will be sorted by increasing x values. """

        if sort_data:
            xy = sorted(zip(x_input, y_input))
            x, y = zip(*xy)
            x_input_list = list(x_input)
            self._original_index_of_xvalue = [x_input_list.index(xi) for xi in x]
            if len(set(self._original_index_of_xvalue)) != len(x):
                raise RuntimeError('There are some non-unique x-values')
        else:
            x, y = x_input, y_input

        self.x = x
        self.y = y