How to call same function 50 times and every time new value need to save?

[Vishav]

For example I have 8 objects. My Code:
ob1=viz.add('D:\PhD\S_Study\Objects 3D\Radio.dae',pos=[-0.9,0.38,2.54],euler=[0,0,0],scale =(0.014,0.014,0.0045))
ob2=viz.add('D:\PhD\S_Study\Objects 3D\Helmet.dae',pos=[7.75,1.38,-5.3],euler=[0,0,0],scale =(0.9,0.9,0.9))
ob3=viz.add('D:\PhD\S_Study\Objects 3D\Thomas.dae',pos=[-0.4,0.55,2.2],euler=[0,0,0],scale =(0.015,0.0135,0.009))
ob4=viz.add('D:\PhD\S_Study\Objects 3D\Picture.dae',pos=[1.1,0.64,2.3],euler=[90,0,0],scale =(0.3,0.3,0.3))
ob5=viz.add('D:\PhD\S_Study\Objects 3D\Bottle.dae',pos=[0.9,0.5,2.2],euler=[0,0,0],scale =(1.7,1.7,1.7))
ob6=viz.add('D:\PhD\S_Study\Objects 3D\Laptop.dae',pos=[-0.25,0.4,2.82],euler=[0,0,0],scale =(0.0018,0.0018,0.0017))
ob7=viz.add('D:\PhD\S_Study\Objects 3D\Spoon.dae',pos=[-1.25,0.08,5.75],euler=[0,0,0],scale =(0.031,0.032,0.032))
ob8=viz.add('D:\PhD\S_Study\Objects 3D\Chain.dae',pos=[1.3,0.55,2.5],euler=[0,0,0],scale =(0.7,0.7,0.7))

ob1.visible(viz.OFF)
ob2.visible(viz.OFF)
ob3.visible(viz.OFF)
ob4.visible(viz.OFF)
ob5.visible(viz.OFF)
ob6.visible(viz.OFF)
ob7.visible(viz.OFF)
ob8.visible(viz.OFF)

I put all in list:
my_list=[ob1,ob2,ob3,ob4,ob5,ob6,ob7,ob8]

Now I want to ON two at a time (ob1 and ob2) (one target and one distractor)
For next trial I want ob3 and ob4 to be ON and so on....

[Vishav]

This is sorted...Thanks for valuable suggestions.