Wait, really? Can you share state between processes?

multi2.py

"""
Can you share state between processes my updating sys.modules?
"""
import multiprocessing
import sys
import time


def change_state():
    print('Before change', id(sys.modules))
    sys.modules['test'] = 'moose'
    print('After change', id(sys.modules))


def check_state():
    time.sleep(1)
    print('Check', id(sys.modules))
    assert sys.modules['test'] == 'moose'


def main():
    p1 = multiprocessing.Process(target=change_state)
    p2 = multiprocessing.Process(target=check_state)

    p1.start()
    p2.start()

    p1.join()
    p2.join()

main()

multi2.py output

Before change 4374219592
After change 4374219592
Check 4374219592
Process Process-2:
Traceback (most recent call last):
  File "/Users/paul/.pyenv/versions/3.5.0/lib/python3.5/multiprocessing/process.py", line 254, in _bootstrap
    self.run()
  File "/Users/paul/.pyenv/versions/3.5.0/lib/python3.5/multiprocessing/process.py", line 93, in run
    self._target(*self._args, **self._kwargs)
  File "multi2.py", line 18, in check_state
    assert sys.modules['test'] == 'moose'
KeyError: 'test'

Nope. So why is the location in memory of sys.modules the same between processes but state can not be shared between processes via the sys.modules dict?