I think you have the first three points — dynamism, C extensions, and economics — right on the money. The fourth point I would add is that Python has a huge sta

I think you have the first three points — dynamism, C extensions, and economics — right on the money. The fourth point I would add is that Python has a huge standard library. That's a very large surface area, all of which ends up needing optimization effort to get good performance across a wide variety of programs.