[Python-ideas] Unpacking iterables for augmented assignment

[Jonathan Fine]

Hi James

Thank you for the simple example. It makes discussing your proposal
much easier. I hope you don't mind, I'll modify it a little to make
the semantics clearer, at least to me.

Here it is.

init = (10, 20)
incr = (1, 2)

(a, b) = init
# Now, (a, b) == (10, 20)

a, b += incr
# Now (a, b) == (11, 22)

However, I'm not sure your suggestion sits well with the following

>>> (10, 20) + (1, 2)
(10, 20, 1, 2)

>>> x = [10, 20]
>>> x += [1, 2]
>>> x
[10, 20, 1, 2]

By the way, I was surprised to find that this is valid

>>> [a, b] = 1, 2

with best regards

Jonathan