[pjmlp]

Having worked at CERN, many do in fact use C++ for day to day work, hence why CINT and ROOT exist.

However my point was that with Julia, those libraries would have been written in Julia.

All the Python libraries that one throws around for these use cases are C, C++ and Fortran libraries, that happen to have Python wrappers.

Any programming language can have wrappers for them, there is nothing written in Python per se.