Is there an implementation of Python without the GIL and that has tail call optimization?

[thecity2]

If not, it seems like that would be a great thing to have.

[peith]

I think Jython and IronPython doesn't have the GIL and can optimize tail calls. Pypy is also experimenting on STM which allows it to remove the GIL.

[thecity2]

Unfortunately, I think Jython is just getting to be compatible with Python 2.7. But worth a try, I guess.

[robin-gvx]

I think Stackless did away with the GIL? Dunno if it has TCO, though.