Python is much, much more dynamic. E.g. look at how something as basic as accessing an attribute on an object works: https://docs.python.org/3/howto/descriptor.html

Also Python has a de facto stable(ish) C ABI for extensions that is 1) heavily used by popular libraries, and 2) makes life more difficult for the JIT because the native code has all the same expressive power wrt Python objects, but JIT can't do code analysis to ensure that it doesn't use it.