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From: dieter <dieter@handshake.de>
Newsgroups: comp.lang.python
Subject: Re: Py_NewInterpreter() - Fatal Error with ceval - orphan tstate
Date: Fri, 27 Nov 2015 08:30:51 +0100
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Xref: csiph.com comp.lang.python:99628

"ramjee a.g." <ramjee.ag@gmail.com> writes:

> I am using python 2.7 for extending my C++ application with python.
>
> And when two pthread of C is executing Py_NewInterpreter() it is throwing
> faltal error with ceval-orphan tstate.  There is no problem when sequential
> thread execution.

"tstate" likely stands for "thread state".

Python must somewhere store important information of the currently
running Python thread - and apparently, your use of "Py_NewInterpreter"
confuses this management.

Maybe, the "tstate" is a global variable and you cannot have multiple
interpreters at the same time. I suggest to have a look at Python's
C implementation, especially the location where the error comes from.