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[Python-ideas] PEP 554: Stdlib Module to Support Multiple Interpreters in Python Code

Koos Zevenhoven k7hoven at gmail.com
Tue Sep 12 11:30:09 EDT 2017 
On Tue, Sep 12, 2017 at 5:53 PM, Stefan Krah <stefan at bytereef.org> wrote:

> On Tue, Sep 12, 2017 at 05:35:34PM +0300, Koos Zevenhoven wrote:
> > I don't see how the situation benefits from calling something the "main
> > interpreter". Subinterpreters can be a way to take something
> > non-thread-safe and make it thread-safe, because in an
> > interpreter-per-thread scheme, most of the state, like module globals,
> are
> > thread-local. (Well, this doesn't help for async concurrency, but
> anyway.)
>
> You could have a privileged C extension that is only imported in the main
> interpreter:
>
>
> if get_current_interp() is main_interp():
>     from _decimal import *
> else:
>     from _pydecimal import *
>
>
>
​Or it could be first-come first-served:

if is_imported_by_other_process("_decimal"):
    from _pydecimal import *
else
    from _decimal import *

––Koos



-- 
+ Koos Zevenhoven + http://twitter.com/k7hoven +
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