Bug report

Bug description:

fromconcurrent.futuresimportInterpreterPoolExecutordefw():importtimetime.sleep(100)executor1=InterpreterPoolExecutor()executor1.submit(w)executor1.submit(w)executor2=InterpreterPoolExecutor()executor2.submit(w)executor2.submit(w)executor1.shutdown()executor2.shutdown()

With this code, htop with "Show custom thread names" enabled) shows it'sThreadPoolExecutor instead ofInterpreterPoolExecutor:

Other process monitor tools may have the same result if it read the custom thread name from OS.

CPython versions tested on:

CPython main branch

Operating systems tested on:

macOS, Linux

Linked PRs

• gh-136470: Correct InterpreterPoolExecutor's default thread name #136472
• [3.14] gh-136470: Correct InterpreterPoolExecutor's default thread name (GH-136472) #136889