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

Inizia leggendo Lib/profiling/sampling/stack_collector.py e la gestione esistente di pstats e collapsed-format a cui si fa riferimento nell’issue. Esamina la discussione collegata su Discourse prima di proporre un’interfaccia per collector di terze parti; per considerare il lavoro completato servirebbero un’API concordata, limiti definiti per i formati supportati e un piano per i vincoli di build, test e distribuzione di CPython.