Nope, they are Python bindings to native libraries.

PyTorch in C++ naturally gets little use, because most people don't want to use C++, and although possible, e.g. CINT, very few care about C++ REPLs.

Also these libraries only exist because Python cannot deliver on its own, like Lisp or Scheme, and needs such libraries in first place.

Even BASIC has better options to do machine code and system programming than Python, starting with the original Dartmouth BASIC.