Backwards incompatible: Removed pykka.VERSION and pykka.get_version(), which have been deprecated since v0.14. Use pykka.__version__ instead.
Backwards incompatible: Removed pykka.ActorRef.send_one_way() and pykka.ActorRef.send_request_reply(), which have been deprecated since v0.14. Use pykka.ActorRef.tell() and pykka.ActorRef.ask() instead.
Backwards incompatible: Actors no longer subclass threading.Thread or gevent.Greenlet. Instead they have a thread or greenlet that executes the actor’s main loop.
This is backwards incompatible because you no longer have access to fields/methods of the thread/greenlet that runs the actor through fields/methods on the actor itself. This was never advertised in Pykka’s docs or examples, but the fields/methods have always been available.
As a positive side effect, this fixes an issue on Python 3.x, that was introduced in Pykka 0.16, where pykka.ThreadingActor would accidentally override the method threading.Thread._stop().
Backwards incompatible: Actors that override __init__() must call the method they override. If not, the actor will no longer be properly initialized. Valid ways to call the overridden __init__() method include:
super(MyActorSubclass, self).__init__() # or pykka.ThreadingActor.__init__() # or pykka.gevent.GeventActor.__init__()
Make pykka.Actor.__init__() accept any arguments and keyword arguments by default. This allows you to use super() in __init__() like this:
super(MyActorSubclass, self).__init__(1, 2, 3, foo='bar')
Without this fix, the above use of super() would cause an exception because the default implementation of __init__() in pykka.Actor would not accept the arguments.
Allow all public classes and functions to be imported directly from the pykka module. E.g. from pykka.actor import ThreadingActor can now be written as from pykka import ThreadingActor. The exception is pykka.gevent, which still needs to be imported from its own package due to its additional dependency on gevent.