[issue39511] [subinterpreters] Per-interpreter singletons (None, True, False, etc.)

[STINNER Victor]

STINNER Victor <vstinner at python.org> added the comment:

Recently, Petr Viktorin proposed immortal singletons in my latest "Pass the Python thread state to internal C functions" thread on python-dev list:
https://mail.python.org/archives/list/python-dev@python.org/message/RAVSH7HYHTROXSTUR3677WGTCTEO6FYF/

In 2004,  Jewett, Jim J proposed:

"What if a few common (constant, singleton) objects (such as None, -1, 0, 1) were declared immortal at compile-time?"

https://mail.python.org/archives/list/python-dev@python.org/thread/XWGRUATMRAVXXZKQ7QA2YX22KI55T7P5/#OQO7DWRVH7IIOE4RUJ2ZR7S5UT6WOCPS

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