numpy.array增加维度的简便方法 2022-10-10 07:56:31 输入:import numpy as np a = np.array([1, 2, 3]) print(a)输出结果:array([1, 2, 3])输入:print(a[None])输出结果:array([[1, 2, 3]])输入:print(a[:,None])输出结果:array([[1], [2], [3]])