[Python-Dev] PEP 554 v2 (new "interpreters" module)

Nathaniel Smith njs at pobox.com
Sat Sep 9 14:04:32 EDT 2017

On Sep 8, 2017 4:06 PM, "Eric Snow" <ericsnowcurrently at gmail.com> wrote:


      Run the provided Python code in the interpreter, in the current
      OS thread.  If the interpreter is already running then raise
      RuntimeError in the interpreter that called ``run()``.

      The current interpreter (which called ``run()``) will block until
      the subinterpreter finishes running the requested code.  Any
      uncaught exception in that code will bubble up to the current

This phrase "bubble up" here is doing a lot of work :-). Can you elaborate
on what you mean? The text now makes it seem like the exception will just
pass from one interpreter into another, but that seems impossible – it'd
mean sharing not just arbitrary user defined exception classes but full
frame objects...

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