[issue40600] Add option to disallow > 1 instance of an extension module

[hai shi]

hai shi <shihai1991 at 126.com> added the comment:

> another solution is to move the "module state" into the interpreter,

OK, I am agree victor's solution too. It's a more simpler way.

----------

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue40600>
_______________________________________