Tuples and immutability

[Nick Timkovich]

On Thu, Feb 27, 2014 at 10:33 AM, Chris Angelico <rosuav at gmail.com> wrote:

> On Fri, Feb 28, 2014 at 3:27 AM, Eric Jacoboni <eric.jacoboni at gmail.com>
> wrote:
> > But, imho, it's far from being a intuitive result, to say the least.
>
> It's unintuitive, but it's a consequence of the way += is defined. If
> you don't want assignment, don't use assignment :)
>
> ChrisA
>

Where is `.__iadd__()` called outside of `list += X`?  If the only
difference from `.extend()` is that it returns `self`, but the list was
already modified anyway, why bother with reassignment?
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