_xxinterpqueues.get return strange value, when the queue is empty

[sobolevn]

Bug report

Code:

» ./python.exe                                      
Python 3.13.0a4+ (heads/main:5dc8c84d397, Mar  2 2024, 10:55:34) [Clang 15.0.0 (clang-1500.0.40.1)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import _xxinterpqueues
>>> a = _xxinterpqueues.create(2, 9)
>>> _xxinterpqueues.get(a, 'a')
('a', 0)
>>> 

It is happening on a fresh build of main after #116102 is fixed.

I can reproduce this 100% of times, QueueEmpty as @ericsnowcurrently said in #116102 (comment) never happens to me.

I am on macos.

[Eclips4]

Seems this behaviour is intentional. Second parameter on get method means default value. So, it's ok to not to see the QueueEmpty exception. But, why is there a tuple as a return value of get? The second item in this tuple looks superfluous (Should there really be a tuple here?)

[sobolevn]

(Should there really be a tuple here?)

Yes, the tuple is of (default, fmt).

[ericsnowcurrently]

This should be cleared up by gh-116328.

[Eclips4]

This was fixed in #116328.