You can't practically bootstrap an interpreted language. That being said, I'd be...

shakna · on Jan 3, 2017

Many Lisp interpreters are bootstrapped, have a glance over the examples of meta-circular evaluators at Wikipedia: [0]

[0] https://en.wikipedia.org/wiki/Meta-circular_evaluator#Exampl...

giaour · on Jan 3, 2017

PyPy is Python implemented largely in Python, and it supposedly is faster than python's C implementation.

shakna · on Jan 4, 2017

Depends on what you define as interpreter, as RPython, the language that PyPy uses, actually has a VirtualMachine, turning PyPy more into a bytecode interpreted language... Which some people argue isn't a straight interpreted language.

stefantalpalaru · on Jan 3, 2017

> PyPy is Python implemented largely in Python

It's actually a superset of a subset of Python and it's called RPython: http://rpython.readthedocs.io/en/latest/rpython.html

> it supposedly is faster than python's C implementation

Only if its JIT compiler gets a chance to trace and compile some code which is then executed often enough to make up for the overhead.