allocate TWO interpreters in a C program?

[Torsten Mohr]

Hi,

i can embed Perl into a C program and allocate MORE THAN ONE
interpreter if i want to. They are independent from each other.

Is this also possible in Python?


Best regards,
Torsten.

[Andrew Dalke]

Re: allocate TWO interpreters in a C program?

Torsten Mohr:[color=blue]
> i can embed Perl into a C program and allocate MORE THAN ONE
> interpreter if i want to. They are independent from each other.
>
> Is this also possible in Python?[/color]

As no one else has answered, I'll take a stab at it, on the assumption
that a wrong answer will be corrected.

No, it isn't possible. Various bits of state, like exceptions, are stored
in global variable (actually thread global I think). I think there is other
global state, like sys.modules which contains all of the imported modules.

There are experimental systems like PyPy which can provide
independent interpreters but I know little about them.

Andrew
dalke@dalkescie ntific.com

[David E. Konerding DSD staff]

Re: allocate TWO interpreters in a C program?

In article <4Vicc.16932$lt 2.13201@newsrea d1.news.pas.ear thlink.net>, Andrew Dalke wrote:[color=blue]
> Torsten Mohr:[color=green]
>> i can embed Perl into a C program and allocate MORE THAN ONE
>> interpreter if i want to. They are independent from each other.
>>
>> Is this also possible in Python?[/color]
>
> As no one else has answered, I'll take a stab at it, on the assumption
> that a wrong answer will be corrected.
>
> No, it isn't possible. Various bits of state, like exceptions, are stored
> in global variable (actually thread global I think). I think there is other
> global state, like sys.modules which contains all of the imported modules.
>
> There are experimental systems like PyPy which can provide
> independent interpreters but I know little about them.
>
> Andrew
> dalke@dalkescie ntific.com
>
>[/color]

Actually, more than one *sub*-interpreter can be instantiated in a single C program.

http://python.org/doc/current/api/initialization.html

However, upon close reading, it's hardly as independent as you might hope.

But for fun also read:

http://www.python.org/peps/pep-0311.html

since it seems to imply that multiple subinterpreters are not a frequently used feature.

Dave