Safe to call Py_Initialize() frequently?

roschler robert.oschler at
Sat Mar 21 04:35:28 CET 2009

On Mar 20, 7:27 pm, Mark Hammond <skippy.hamm... at> wrote:
> On 21/03/2009 4:20 AM, roschler wrote:
> Calling Py_Initialize() multiple times has no effect.  Calling
> Py_Initialize and Py_Finalize multiple times does leak (Python 3 has
> mechanisms so this need to always be true in the future, but it is true
> now for non-trivial apps.
> > If it is not a safe approach, is there another way to get what I want?
> Start a new process each time?
> Cheers,
> Mark

Hello Mark,

Thank you for your reply.  I didn't know that Py_Initialize worked
like that.

How about using Py_NewInterpreter() and Py_EndInterpreter() with each
job?  Any value in that approach?  If not, is there at least a
reliable way to get a list of all active threads and terminate them so
before starting the next job?  Starting a new process each time seems
a bit heavy handed.


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