> You wouldn't go back the other way because it's very rare to go to all that extra effort writing in a more efficient language only to realise that the slower

> You wouldn't go back the other way because it's very rare to go to all that extra effort writing in a more efficient language only to realise that the slower performance of Python would've been adequate after all. It's UIs which are typically rewritten in more "fun" languages - occasionally because it becomes too much of a maintenance burden when all one wants to do is move around some form controls.