How to create 4d Array in Python

Question

Assist me in creating a 4d array. Below is my code for 3 dimension array. How do I get output in the shape of (4,3,2,3)

Three_d_array - numpy.array([[[1,2,3],[4,5,6]],[[7,8,9],[10,11,12]],[[13,14,15],[16,17,18]]])

Answer 1

import numpy as np    

a = np.arange(72)

a = np.reshape(a, (4,3,2,3))

OR

a = np.array([[[[1,2,3],[4,5,6]],[[7,8,9],[10,11,12]],[[13,14,15],[16,17,18]]], [[[1,2,3],[4,5,6]],[[7,8,9],[10,11,12]],[[13,14,15],[16,17,18]]], [[[1,2,3],[4,5,6]],[[7,8,9],[10,11,12]],[[13,14,15],[16,17,18]]], [[[1,2,3],[4,5,6]],[[7,8,9],[10,11,12]],[[13,14,15],[16,17,18]]]])

OR

a = np.array([[[1,2,3],[4,5,6]],[[7,8,9],[10,11,12]],[[13,14,15],[16,17,18]]])

a = np.expand_dims(a, axis=0)

a = np.repeat(a, 4, axis=0)

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