please help explain this result

[Yingjie Lan]

--- On Sun, 10/17/10, Steven D'Aprano <steve at REMOVE-THIS-cybersource.com.au> wrote:

> (1) If you assign to a variable *anywhere* in the function,
> it is a local 
> *everywhere* in the function.
> 
> There is no way to have a variable refer to a local in some
> places of a 
> function and a global in other places of the same function.
> This is by 
> design.
> 

Super crystal clear. Thanks a lot!

Yingjie