• 2022-06-01
    ‍请在下面空格处填写答案(两行结果中间用一个半角分号分隔)。​‍>>> import numpy as np >>> a = np.array([(1, 2, 3), (4, 5, 6), (7, 8, 9)]) >>> a.shape (______) >>> a[[2]].sum() _______​