CPython is portable but due to integrated standard library (builtin functionality) it is hard to evolve it,
How so? The stdlib is just a collection of packages we happen to ship with Python. Think of it as if we ship blessed packages from PyPI with Python itself. That's it. The stdlib very much is not a hindrance to performance. Python's design as a language is what makes it tough. We could rip out the stdlib tomorrow and it would not change how we optimize the CPython interpreter.
for examle to add JIT,
As someone who helped create a JIT for Python (Pyjion), I can tell you as a fact that the stdlib in no way hindered our work. It was a lack of time and simply the fact that Python is a very dynamic language.
anyway it is just my thoughts
And that's fine, but what we are all trying to do is help educate you about some statements you made which are not accurate.
-Brett
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