def setUpClass(cls): b1 = tl.alphas([4, 3, 2, 1], 0.5431) b2 = tl.alphas([4, 3, 2], 5) b3 = tl.alphas([1, 2, 3, 4], -5) b4 = tl.alphas([2, 3, 4], True) with tf.Session() as sess: cls._b1, cls._b2, cls._b3, cls._b4 = sess.run([b1, b2, b3, b4])