def f6(A):
    rows, cols = A.shape
N = rows + cols - 1
out = np.zeros(N, A.dtype)
if rows > cols:
    for idx in range(cols):
        out[N - idx - rows:N - idx] += A[:, (idx)]
else:
    for idx in range(rows):
        out[N - idx - cols:N - idx] += A[idx]
out = out[::-1]
return out
Вычислите след матрицы по всем диагоналям