import numpy as np
l = [[0, 0, 0], [0, 0, 0]]
arr = np.array(l)
print(arr)
[[0 0 0] [0 0 0]]
print(arr.dtype, arr.shape, arr.ndim)
int64 (2, 3) 2
l2 = [[0, 0, 0], [0, 0]]
arr2 = np.array(l2)
print(arr2)
[[0, 0, 0] [0, 0]]
print(arr2.dtype, arr2.shape, arr2.ndim)
object (2,) 1