Nuitka is the Python compiler. It is written in Python. It is a seamless replacement or extension to the Python interpreter and compiles every construct that Python 2 (2.6, 2.7) and Python 3 (3.4 - 3.11) have, when itself run with that Python version. It then executes uncompiled code and compiled code together in an extremely compatible manner. You can use all Python library modules and all extens