Is python's upgrade difficulties from 2.7 to 3.x due to being interpreted rather than compiled? I feel like the types of problems seen in a non compatible upgr

Is python's upgrade difficulties from 2.7 to 3.x due to being interpreted rather than compiled? I feel like the types of problems seen in a non compatible upgrade are exactly what I consider easy problems in Java. Look for the compilation issues, fix them, done. In Java I am largely talking about library upgrade issues because Java made the decision to remain language backwards compatible. Something that has it's costs but also some real benefits. See Linux and it's promises to never break user space.