如何徹底打亂一個數組

import numpy as np

def abs_shuffle(arr0):
  arr = arr0.copy()
  for i in np.arange(len(arr)-1,0,-1):
    idx = np.random.choice(range(i))
    arr[i], arr[idx] = arr[idx], arr[i]
  return arr


arr1 = [1,2,3]
shuffle_arr = abs_shuffle(arr1)