[Python-Dev] Safe to change a thread's interpreter?

[Phillip J. Eby]

At 06:19 AM 8/2/04 +0200, Martin v. Löwis wrote:
>Phillip J. Eby wrote:
>>Recently I've been researching implementation strategies for adding Java 
>>classloader-like capabilities to Python.  I was pleasantly surprised to 
>>find out that CPython already supports multiple interpreters via the C 
>>API, where each "interpreter" includes fresh versions of 'sys', 
>>'__builtin__', etc.
>
>You should be aware that many of us consider the feature of multiple
>interpreters broken. For example, global variables in extension modules
>are shared across interpreters, and there is nothing that can be done
>about this, except for changing the entire C API.

Yes, I saw that as a documented limitation.  Are there undocumented 
limitations as well?  Is the feature headed for deprecation?  I guess I'm 
not understanding your implication(s), if any.