[wxPython-users] Bug in lib.pubsub?

[Robin Dunn]

Michael Hipp wrote:
> If I attempt to send a message using a topic for which noone has subscribed, I get this error:
> 
> ---------------
> NameError: global name 'aTopic' is not defined
> 
> Traceback (innermost last):
> [snip]
> File "c:\projects\common\pubsub.py", line 761, in sendMessage
>   self.__deliveryCount += \
> File "c:\projects\common\pubsub.py", line 477, in sendMessage
>   onTopicNeverCreated(aTopic)
> ---------------
> 
> The code section is this:
> 
>     def sendMessage(self, topic, message, onTopicNeverCreated):
>         """Send a message for given topic to all registered listeners. If
>         topic doesn't exist, call onTopicNeverCreated(topic)."""
>         # send to the all-toipcs listeners
>         deliveryCount = _TopicTreeNode.sendMessage(self, message)
>         # send to those who listen to given topic or any of its supertopics
>         node = self
>         for topicItem in topic:
>             assert topicItem != ''
>             if node.hasSubtopic(topicItem):
>                 node = node.getNode(topicItem)
>                 deliveryCount += node.sendMessage(message)
>             else: # topic never created, don't bother continuing
>                 if onTopicNeverCreated is not None:
>                     onTopicNeverCreated(aTopic)
>                 break
>         return deliveryCount
> 
> Appears that 3rd-to-last line should be:
>                     onTopicNeverCreated(topicItem)

I've already received a patch correcting this, which changes aTopic --> 
topic.

-- 
Robin Dunn
Software Craftsman
http://wxPython.org  Java give you jitters?  Relax with wxPython!