Blender for loop relocation

Question

我试图制作一个循环，它将移动物体移到前一个

之外 像那样

 cube50 - move to 50y

 cube100 - move to 50y + 100

 cube400 - move to 150y + 400

但我遇到循环问题，我的想法是 location = locationY + dimensionY

import bpy

for ob in bpy.context.selected_objects:
bpy.context.scene.objects.active = ob

Y = ob.dimensions[1]
for Y in ob:
    ob.location[1] = ob.dimensions[1] + Y

但是......希望有人可以帮忙^ _ ^