It’s a little too fast, I’m having trouble believing it’s actually doing anything sometimes.
Python may not be the fastest language, but it's easy to learn, compilation times aren't an issue, you'll never have to fight the borrow checker, etc.
Every language has its warts.
But as soon as I have any suspicion that the task is going to perform any non-trivial computation, or when I notice the structure of the program starts to grow beyond a couple of files, that's when Python no longer feels suitable to the task.
Technically Python, the language spec, is written in English.
Letting each language do what it does best is really ideal, I'm glad that python has a great FFI, I wish golang did.
Speaking of golang, the typescript compiler is now written in it. Another case of using each language for it's strengths.