how to pass attribute name via sys.argv

[Felix Hebeler]

Hi all,
I am doing some Python scripting for a while, but I'm not too deep into 
it yet. So I have a problem I can't solve.

I need to call an object attribute:

value = object.attrName[0]

the problem is, that the attribute name can only be specified at runtime.

So what I have is something like

 >>> attrName = sys.argv[1]
 >>> attrName
'cellsize'

and I need to pass it on so I can call

value = object.cellsize[0]


Can this be done using Python?

Thanks for any hints

Cheers
Felix