Why not a, b += i, j? (augmented assignment via tuple unpacking)

[Grant Edwards]

In article <KbRE9.534$RQ3.26615908 at newssvr17.news.prodigy.com>, Steven Rumbalski wrote:

> In python I can write:
> 
> a, b = i, j
> 
> but the following is not legal:
> 
> a, b += i, j
> 
> Is there a reason that allowing this would be bad?

If it were allowed, what do you propose it would do?

> Why does Python forbid this?

First tell us what you think it would do were it legal.  :)

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