[C++-sig] Contributing an embedding example (after a bugfix ;)

[Dirk Gerrits]

After receiving a lot of help in another thread (thanks!) I was able to 
get my little Boost.Python program using embedding to compile and run. 
It works great! But upon deinitialization with Py_Finalize(), I get an 
error:

Fatal Python error: PyThreadState_Get: no current thread

I don't really know what is causing this, so I am asking for your help 
again. :)

After having fixed this though, I'd be willing to contribute this as an 
example for Boost.Python, if there is interest. I thought it was a 
pretty neat technique myself. ;)

Before that, I'd need to Boostify the code a bit though, and I am 
wondering if all of it is necessary. For example, BaseWrap seems a bit 
superfluous since I'm only using Base's polymorphism from the C++ side. 
Any comments on this?

Regards,

Dirk Gerrits
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