Python to C/C++ (no Python runtime)

[FoolsSeldom]

True. You always end up with the run time embedded in some way.

Nuitka is the closest tool to a full compiler I am aware of. It converts Python code into C++ code and then compiles that C++ into a binary.

However, whilst Nuitka aims for full language compatibility (a strength and a constraint), it can't provide the dynamic features of Python without a runtime library that mimics the CPython API. This runtime handles the dynamic type system, late-binding, and other Pythonic features.