Problems with thread safety

[Sven Rech]

Hi,

In my C program, I want to use python scripts. This scripts should also
have the ability to start threads.

So at the initilisation phase I do:
PyEval_InitThreads();
PyEval_ReleaseLock();

With the second call I want to release lock, for that the python threads
can also do their work.

But then, when I call a method in a script which starts a thread then, I
get the following error:
Fatal Python error: PyEval_AcquireThread: non-NULL old thread state
Aborted (core dumped)

What did I wrong?