CPython execution

Compile to bytecode and run in a stack based virtual machine.

https://www.aosabook.org/en/500L/a-python-interpreter-written-in-python.html

LOAD_CONST BINARY_ADD BINARY_SUBTRACT BINARY_MULTIPLY

Tailbiter a bytecode compiler written in Python https://codewords.recurse.com/issues/seven/dragon-taming-with-tailbiter-a-bytecode-compiler