geventactor: Exception KeyError ()

[Wayne Ye]

I simply replace ThreadingActor with GeventActor in the official examples/plain_actor.py, the code is below:

#! /usr/bin/env python

import pykka
import gevent
import gevent.monkey
from pykka.gevent import GeventActor

gevent.monkey.patch_all()


#class PlainActor(pykka.ThreadingActor):
class PlainActor(GeventActor):

    def __init__(self):
        super(PlainActor, self).__init__()
        self.stored_messages = []

    def on_receive(self, message):
        if message.get('command') == 'get_messages':
            return self.stored_messages
        else:
            self.stored_messages.append(message)


if __name__ == '__main__':
    actor = PlainActor.start()
    actor.tell({'no': 'Norway', 'se': 'Sweden'})
    actor.tell({'a': 3, 'b': 4, 'c': 5})
    print(actor.ask({'command': 'get_messages'}))
    actor.stop()

After run this I saw:
Exception KeyError: KeyError(4536872784,) in <module 'threading' from '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/threading.pyc'> ignored

My environments:
python 2.7.10
pykka 1.2.1
gevent 1.0.2

[Stein Magnus Jodal]

I can reproduce this using:

• Python 2.7.15
• Pykka 1.2.1
• Gevent 1.0.2
• gevent.monkey.patch_all()

If I do either of the following, the problem disappears:

• Skip the monkey patching
• Upgrade Gevent from 1.0.2 to 1.1.0 or newer

Thus, I believe this to be a bug in Gevent 1.0.x that was fixed in Gevent 1.1.0 or one of its prereleases, released almost three years ago.

Sorry for not looking into this sooner.