Write a NumPy program to set zero to lower triangles along the last two axes of a three-dimensional of a given array

import numpy as np
arra=np.ones((1,8,8))
print("Original array:")
print(arra)
result = np.triu(arra, k=1)
print("\nResult:")
print(result)

Sample Output:

Original array:
[[[1. 1. 1. 1. 1. 1. 1. 1.]
  [1. 1. 1. 1. 1. 1. 1. 1.]
  [1. 1. 1. 1. 1. 1. 1. 1.]
  [1. 1. 1. 1. 1. 1. 1. 1.]
  [1. 1. 1. 1. 1. 1. 1. 1.]
  [1. 1. 1. 1. 1. 1. 1. 1.]
  [1. 1. 1. 1. 1. 1. 1. 1.]
  [1. 1. 1. 1. 1. 1. 1. 1.]]]

Result:
[[[0. 1. 1. 1. 1. 1. 1. 1.]
  [0. 0. 1. 1. 1. 1. 1. 1.]
  [0. 0. 0. 1. 1. 1. 1. 1.]
  [0. 0. 0. 0. 1. 1. 1. 1.]
  [0. 0. 0. 0. 0. 1. 1. 1.]
  [0. 0. 0. 0. 0. 0. 1. 1.]
  [0. 0. 0. 0. 0. 0. 0. 1.]
  [0. 0. 0. 0. 0. 0. 0. 0.]]]