need code in python

Problem 4 Write a function invertstuff(A) which takes in a matrix (two-dimensional array), then inverts the positions of all the rows, subsequently inverts the positions of all the columns, finally adds a "buffer" of zeros as the first and last row, and first and last column. The function returns the resulting matrix So for example if A is the matrix N A UI invertmatrix(A) would return UO 0 ONAGO 0 O O I def invertstuff (A ) : return None A = np. arange(1 . 7) . reshape(3, 2) ( invertstuff (A)== np. array([[0. . 0. . 0. . 0.]. [0. . 6. . 5. . 0.]. [0. . 4. . 3. . 0.]. [0. . 2. . 1. . 0.]. [0. . 0. . 0. . 0. ]])).all() A = np. arange(20) . reshape(5. 4) (invertstuff(A)==np. array([[ 0. . 0. . 0. . 0. . 0. . 0.]. [ Q. . 19. . 18. . 17. . 16. . 0.]. [ Q. . 15. . 14. . 13. . 12.. 0.]. [0. . 1