Shared state in multiprocessing Processes

Question

Please consider this code:

import time
from multiprocessing import Process

class Host(object):
    def __init__(self):
        self.id = None
    def callba         


        

Answer 1

multiprocessing runs stuff in separate processes. It is almost inconceivable that things are not copied as they're sent, as sharing stuff between processes requires shared memory or communication.

In fact, if you peruse the module, you can see the amount of effort it takes to actually share anything between the processes after the diverge, either through explicit communication, or through explicitly-shared objects (which are of a very limited subset of the language, and have to be managed by a Manager).