摘要： import numpy as np x = np.arange(10) x array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]) X = np.arange(15).reshape(3, 5) X array([[ 0, 1, 2, 3, 4], [ 5, 6, 7, 8, 阅读全文