I think it's fine. It collects all the keys and values and then calls
BUILD_MAP (a new opcode), rather than calling STORE_MAP for each key/value
pair. I think this is a reasonable strategy for compiling a dict display.

On Thu, May 7, 2015 at 11:40 AM, Joshua Landau <report@bugs.python.org>
wrote:

>
> Joshua Landau added the comment:
>
> There is a change as part of this to make dict building more like list and
> set building, which both have this behaviour.
>
> The same changes have likely occurred before whenever BUILD_LIST and
> BUILD_SET were introduced, and this behaviour seems particularly undefined.
>
> That said, I did overlook the difference. Hopefully there's agreement that
> it doesn't matter.
>
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> <http://bugs.python.org/issue2292>
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