Paul Moore wrote:
Do you know if these remaining problems are listed anywhere?

There was a big discussion about this in comp.lang.python
not long ago. Basically all the built-in types and constants
are shared between interpreters, which means you still need
a GIL to stop different interpreters stepping on each other's
toes.

AIUI,
certain software (for example mod_python) has been using multiple
interpreters for a long while now

Multiple interpeters are possible, they're just not completely
independent. Whether this is a problem depends on the reason
you want multiple interpreters. In the Apache case, it's
probably more about providing virtual Python environments than
free-threading between interpreters.

--
Greg
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