翻转二维 numpy 数组行中的两个值

Question

I wrote the following code to flip two values in rows of 2d numpy array. However, I am wondering if there is a better way to do this. thanks in advance

def mtn(offg):
    for row in range(offg.shape[0]):
        point1 = random.randint(0, 139)
        point2 = random.randint(0, 139)
        temp = offg[row, point1]
        offg[row, point1] = offg[row, point2]
        offg[row, point2] = temp
    return offg

Answer 1

You could use advanced indexing:

offg[:,[p1, p2]] = offg[:,[p2, p1]]

Answer 2

if points are same in each row, u can use code like

tmp = offg[:,p1].copy()
offg[:,p1] = offg[:,p2]
offg[:,p2] = tmp