To reassure
A = np.array([[1, 7, 15], [2, 5, 6], [3, 8, 9], [10, 11, 12]])
A.main (0) # returns A one-dimensional array of the minimum values of each column of A; [6] 1
A.min(1) # returns A one-dimensional array of the smallest values in each row of A; ,2,3,10 [1]
A.max(0) # returns A one-dimensional array of the maximum values of each column of A; ,11,15 [10]
A.max(1) # returns A one-dimensional array of the maximum value of each row of A; [15,6,9,12]
