API for outputting different formats from CPython sampling profiler

Feature or enhancement

Proposal:

CPython 3.15 has statistical sampling profiler which currently only supports outputting

1. pstats https://docs.python.org/3.15/library/profile.html#pstats.Stats
2. collapsed format for flamegraphs https://github.com/python/cpython/blob/8d5c3341c538cd1a4192ca8a1536b2eed4b98c69/Lib/profiling/sampling/stack_collector.py#L24

Since it's still an early stage for the sampling profiler, I thought it would be nice to initiate discussion around how to support multiple different formats from the profiler.

1. pprof
2. OTel

are the formats that could potentially be added, but supporting those from CPython would introduce dependencies that might complicate building/testing and distributing CPython.

I'd like to suggest that CPython has an interface to support 3rd party collectors. What do you think?

Has this already been discussed elsewhere?

I have already discussed this feature proposal on Discourse

Links to previous discussion of this feature:

https://discuss.python.org/t/pre-pep-api-for-outputting-different-formats-from-cpython-sampling-profiler/103490

Commencez par lire Lib/profiling/sampling/stack_collector.py et le traitement existant de pstats et collapsed-format mentionné dans l’issue. Consultez la discussion Discourse liée avant de proposer une interface pour les collectors tiers ; la tâche ne serait considérée comme terminée qu’avec une API approuvée, des limites clairement définies pour les formats pris en charge et un plan pour les contraintes de build, de test et de distribution de CPython.