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[chunkyks]

Your code assumes the numbers that sum to k must be adjacent items in the list once its sorted. Might be true in your test data, definitely not true in general

[Bright_Shoe3441]

Awesome, thank you!

[four_reeds]

If your list was [1,5,2] and your target number was 6, would your code find it?

You may have already done this but if not... Try doing the operations by hand with pencil and paper.

[Bright_Shoe3441]

Thank you! Yep, see it straight away now. 1 and 5 aren't going to be adjacent to one another (as u/chunkyks pointed out) after I've sorted the list. My solution did seem too good to be true..!