Yes but at least Python has very good native access to libraries. For example I am sure Java is faster at numerical processing than pure Python at least with P

Yes but at least Python has very good native access to libraries. For example I am sure Java is faster at numerical processing than pure Python at least with Python you have the option of writing in native. Python has really good C interop and it maybe considered by some not part of the language but I consider that it is. Yeah you could write native code for Java via JNI but its not easy (granted its been a while) and for reasons I can't remember why but JNI is slow (probably moving stuff on and off the heap... I can't recall).