function matrix

[scidam]

I have kept your code and changed it a bit, however when I run it, there is a logical error in it
as I always get 1, no matter how the matrix looks.

This is because you need to use .all(), e.g. return (np.array(A) == np.array(A).T).all(). Moreover, it would be better to
use floating-point comparison, e.g. np.allclose(np.array(A), np.array(A).T). This will allow correct handling of such cases as 0.99999999999 == 1.00000000000003, that, obviously, will return False, but we might expect (wish) that it should return True.