[denys_potapov]

Cool. Recursion in python is common bottleneck in competitive programming. Will give it a try. I created a similar tool for recursion [1]. But ended with rewriting AST and emulating stack. Pros - no need for accumulator, cons - almost unusable in real world.

[1] https://dev.to/denyspotapov/callonce-python-macro-for-unlimi...

[qsort]

Do you frequently use Python for competitive programming puzzles? I've done it a bit in the past, and everyone always used C++.

[denys_potapov]

Always. Probably you can't get in top 100 with python[1]. But I like dicts with tuple keys, bigints, all the list things.

[1] My best is around 1300 place in HackerCup.

[btilly]

I have to wonder how much better you'd do if they made pypy an option.