I really can't say if you're serious or joking. Python's transition can only be called 'successful' if the plan was to inflict as much pain as possible on maintainers of Python projects (and nowadays, Typescript via Deno doesn't really look all that bad for new projects where I would have used Python before).

If the 2-to-3 transition hadn't left so many scars, the idea to switch to a different language for cross-platform command line tools wouldn't even enter my mind. Python 2.x was just perfect for this use case, and Python3 didn't add anything of value for such scripts.