import numpy as np x = np.random.random(10) [ 0.27995734 0.05977967 0.59401233 0.45374778 0.69411132 0.3680196 0.57969357 0.52534503 0.9995786 0.33110147] [ 2.41417094e-06 4.15437686e-06 8.80283329e-07 9.19866647e-06 2.07120169e-07 9.81829578e-06 9.98575051e-06 1.63425382e-06 6.44888900e-07 5.88317420e-06] [4 8 7 6 2 4 0 4 0 2] np.set_printoptions(precision=3) #有効桁3桁で丸める [ 0.014 0.68 0.576 0.57 0.