Python-сообщество

from pickle import dumps, HIGHEST_PROTOCOL

class T(object):
  def a():
    pass

class A(object):
  def __init__(self):
    self.registered = {}
  
  def b(self):
    pass

  def register(self, func, name=None):
    if name is None:
      name = func.__name__
    self.registered[name] = func

t = T()
inst = A()

inst.register(t.a)
inst.register(inst.b)

d = dumps(inst,HIGHEST_PROTOCOL)
print d

Traceback (most recent call last):
  File "test.py", line 25, in <module>
    d = dumps(inst,HIGHEST_PROTOCOL)
  File "C:\Python26\lib\pickle.py", line 1366, in dumps
    Pickler(file, protocol).dump(obj)
  File "C:\Python26\lib\pickle.py", line 224, in dump
    self.save(obj)
  File "C:\Python26\lib\pickle.py", line 331, in save
    self.save_reduce(obj=obj, *rv)
  File "C:\Python26\lib\pickle.py", line 419, in save_reduce
    save(state)
  File "C:\Python26\lib\pickle.py", line 286, in save
    f(self, obj) # Call unbound method with explicit self
  File "C:\Python26\lib\pickle.py", line 649, in save_dict
    self._batch_setitems(obj.iteritems())
  File "C:\Python26\lib\pickle.py", line 686, in _batch_setitems
    save(v)
  File "C:\Python26\lib\pickle.py", line 286, in save
    f(self, obj) # Call unbound method with explicit self
  File "C:\Python26\lib\pickle.py", line 649, in save_dict
    self._batch_setitems(obj.iteritems())
  File "C:\Python26\lib\pickle.py", line 681, in _batch_setitems
    save(v)
  File "C:\Python26\lib\pickle.py", line 331, in save
    self.save_reduce(obj=obj, *rv)
  File "C:\Python26\lib\pickle.py", line 396, in save_reduce
    save(cls)
  File "C:\Python26\lib\pickle.py", line 286, in save
    f(self, obj) # Call unbound method with explicit self
  File "C:\Python26\lib\pickle.py", line 748, in save_global
    (obj, module, name))
pickle.PicklingError: Can't pickle <type 'instancemethod'>: it's not found as __builtin__.instancemethod

d = dumps(inst,HIGHEST_PROTOCOL)

p = multiprocessing.Process(target = ProcFunc,
                                args = (inst,))
p.start()
p.join()

from pickle import dumps, loads, HIGHEST_PROTOCOL

class T(object):
  def a(self):
    print 'called T::a'
    pass

class A(object):
  def __init__(self):
    self.registered = {}

  def b(self):
    print 'called A::b'
    pass

  def register(self, obj, fname):
    self.registered[fname] = obj

t = T()
inst = A()

inst.register(t, 'a')
inst.register(inst, 'b')

unpickled = loads(dumps(inst,HIGHEST_PROTOCOL))

for fname, obj in unpickled.registered.iteritems():
    getattr(obj, fname)()

...
def ProcFunc(aobj):
    for fname, obj in aobj.registered.iteritems():
        getattr(obj, fname)()

p = processing.Process(target = ProcFunc, args = (inst,))
p.start()
p.join()