Original link: Python Is Too Slow for Real Applications (And I Can Prove It) / CodexLab.
I am sure that the article is true.
But it is sort of saying that water is wet.
Everybody know that:
Python is interpreted and has a GIL (actually recent versions has allowed free-threading aka no GIL and has an experimental JIT compiler, but traditional). Go and Java are compiled (AOT and JIT respectively).
So if one has a compute intensive task that needs to be done in parallel, then Go and Java are faster than Python. No surprise.
But I do not consider that a problem for Python. I consider that a case of choosing the right tool for the job.