Picking wrapped classes

[rabernat]

Thanks for this very useful package! It solves a genuine problem with python's "all or nothing" approach to async programming.

I noticed that the classes produced by Synchronizer.create_blocking are not pickleable, even if the classes they wrap are.

I then had a look at the tests and saw this comment:

synchronicity/test/pickle_test.py

Lines 12 to 20 in f65617b

	@pytest.mark.skip(reason="Let's revisit this in 0.2.0")
	def test_pickle():
	s = Synchronizer()
	BlockingPicklableClass = s.create(PicklableClass, Interface.BLOCKING)
	obj = BlockingPicklableClass()
	assert obj.f(42) == 1764
	data = pickle.dumps(obj)
	obj2 = pickle.loads(data)
	assert obj2.f(43) == 1849

This makes me think there is some history here...

If I wanted to make my wrapped classes pickleable, could you give me any pointers on where to start?

[erikbern]

honestly, i don't remember – i just tried to run the test again and it fails in some very opaque way :(

synchronicity is overdue for a refactoring – i think it would be good to revisit things like this!