Python isn&#x27;t necessarily replacing the hardcore number crunching code (at least in my industry). It&#x27;s more becoming the glue code to wrap those libraries and make them more accessible. That and data processing. I don&#x27;t see people running massive simulations on clusters using mpi4py or whatever (thank god).<p>Even then, in a lot of cases programmer time is infinitely more expensive than CPU time, so it often still makes sense if Python is the more accessible choice.