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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 get_scores(self, y_i, y_j):
		'''
		Same function as get_zeta_i_j_given_separate_counts

		Parameters
		----------
		y_i, np.array(int)
			Arrays of word counts of words occurring in positive class
		y_j, np.array(int)

		Returns
		-------
		np.array of z-scores
		'''
		z_scores = self.get_zeta_i_j_given_separate_counts(y_i, y_j)
		# scaled_scores = scale_neg_1_to_1_with_zero_mean_abs_max(z_scores)
		return z_scores