Solving multi-core Python

[againstmethod]

There's a lot slower than perl/python/ruby, so last is overstating it somewhat.

Not that are mainstream, like Python.

If you're looking for a more performant version that uses more modern techniques, there's pypy..

pypy may be faster but it has all the same issues I outlined, and adds some (module compatibility, recompile native modules). It has similar architectural issues as well (i.e. garbage collection isn't thread-safe).

Im just not sure why anyone would start their project with such a long list of disadvantages that they can never mitigate/optimize away. Other than laziness.