Basic optimization of python.

[Diez B. Roggisch]

> This is safe, and is done:
> 
>>>> import dis
>>>> def f(): x = 1 + 2
> ...
>>>> dis.dis(f)
>   1           0 LOAD_CONST               3 (3)
>               3 STORE_FAST               0 (x)
>               6 LOAD_CONST               0 (None)
>               9 RETURN_VALUE
>>>>

So I stand corrected. Any idea when that was introduced?

Diez