Multiple dispatch is nice because it makes extending library (or any) code very trivial. The seamless way in which Julia libraries can be mixed and matched and

Multiple dispatch is nice because it makes extending library (or any) code very trivial. The seamless way in which Julia libraries can be mixed and matched and used together is a testament to this. Python on the otherhand, each library is its own little world and cannot be used in novel or unexpected ways. Moreover, the unperformant nature of Python means that you must use libraries in very cookie cutter ways or else performance falls off a cliff.