PyPy does have a GIL: http://doc.pypy.org/en/latest/faq.html#does-pypy-have-a-gi... | Hacker News

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		schmichael on Feb 2, 2019 \| parent \| context \| favorite \| on: A Python Interpreter Written in Rust PyPy does have a GIL: http://doc.pypy.org/en/latest/faq.html#does-pypy-have-a-gil-... Jython, as you state, does not: http://www.jython.org/jythonbook/en/1.0/Concurrency.html

znpy on Feb 2, 2019 [–]

Jython is however stuck with Python 2.x compatibility only as far as I know (I'd be happy to be proven wrong).

mooreds on Feb 2, 2019 | [–]

Jython 3.x development is "in progress":

https://wiki.python.org/jython/JythonFaq/GeneralInfo

Last commit was over a year ago:

https://github.com/jython/jython3

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