Taking a deep look in the #python multiprocessing library to inject #opentelemetry tracing contexts between processes and thread.
I rarely saw a library that is so "write-once-hopefully-never-read-it-again", 0 good design pattern, all dependencies hardcoded, no hooks to customize the behaviours, many inconsistencies, near-0 comments, weird variable names, I don't know how this could even pass code review.

I can't think that all the python multiprocessing runs on this...