Warning about remaining subinterpreters should suggest using of concurrent.interpreters.Interpeter

[sergey-miryanov]

Bug report

Bug description:

finalize_subinterpreters checks if remaining subinterpreters are present and if so suggest to destroy them via destroy method of internal _interpreters module. I propose to change the warning message to use Interpeter.close as it less confusing.

cpython/Python/pylifecycle.c

Lines 2642 to 2648 in 2fbd396

	/* Warn the user if they forgot to clean up subinterpreters. */
	(void)PyErr_WarnEx(
	PyExc_RuntimeWarning,
	"remaining subinterpreters; "
	"destroy them with _interpreters.destroy()",
	0);

@ZeroIntensity @ericsnowcurrently What do you think?

If yes, I'm ready to fix this.

CPython versions tested on:

CPython main branch

Operating systems tested on:

No response

Linked PRs

• GH-141509: Fix warning about remaining subinterpreters #141528
• [3.14] GH-141509: Fix warning about remaining subinterpreters (GH-141528) #141566

[ZeroIntensity]

I think it'd be fine to change it, yeah. Eric added that warning long before concurrent.interpreters was a thing.