from multiprocessing import Process, Manager
d = Manager().dict()
d2 = {}
 
def f():
  d['a1'] = {}
 <span style="color:#ff6666;">  d['a1']['a2'] = 11</span>
  print d['a1']['a2']
 
if __name__ == '__main__':
  p = Process(target=f)
  p.start()
  p.join()

  print d['a1']['a2']
KeyError: 'a2'

from multiprocessing import Process, Manager
d = Manager().dict()
d2 = {}
 
def f():
  d['a1'] = {}
<span style="color:#ff6666;">  d2['a2'] = 11
  d['a1'] = d2</span>
  print d['a1']['a2']
 
if __name__ == '__main__':
  p = Process(target=f)
  p.start()
  p.join()