[Python-3000] Sky pie: a "var" keyword

[Fredrik Lundh]

Marcin 'Qrczak' Kowalczyk wrote:

> It should be:
> 
> var x = 0
> def f():
>    print x
>    x = 3
> 
> for the global variable, and:
> 
> var x = 0
> def f():
>    var x
>    print x
>    x = 3
> 
> for the local variable.

so the goal of this exercise is to make it easier to introduce 
hard-to-spot errors by accident?

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