Question

Is python built on top of C?

Answer 1

In essence, all languages are built on top of machine code. The closer they are to assembly, the closer they are to the true machine code. Java precompiles to byte code before being run, so Java is not that close to machine code but byte code is.

No matter what language the Python interpreter is written in, it is not built on top of that language. It is just built using that language but has a goal of getting from Python code to machine code.

Answer 2

Python is written in C, and many times is barely different from C.