Hi,
I ran across a strange problem using mulitple inheritance that I hope someone can explain. Basically, I am implementing a Publisher pattern, and when I try to add threading, the order I list Base classes matters! Here is the short sample code-- all help explaining this is appreciated!
Thanks,
Marcus
---
import threading
class Publisher(object):
def __init__(self): self.listeners = {}
def register(self, id, object):
self.listeners[id] = self.listeners.get(id, object)
# This FAILS with AttributeError: 'FancyPublisher'
# object has no attribute 'listeners'
class FancyPublisher(threading.Thread, Publisher):
def __init__(self):
super(FancyPublisher, self).__init__()
F = FancyPublisher()
F.register('me', None)
# However, this succeeds!?
class FancyPublisher(Publisher, threading.Thread):
def __init__(self):
super(FancyPublisher, self).__init__()
F = FancyPublisher()
F.register('me', None)
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