pubsub example

pubsub.py

# first line below is necessary only in wxPython 2.8.11.0 since default 
# API in this wxPython is pubsub version 1 (expect later versions 
# of wxPython to use the kwargs API by default)
from wx.lib.pubsub import setupkwargs

# regular pubsub import
from wx.lib.pubsub import pub
 
class SomeReceiver(object):
    def __init__(self):
        pub.subscribe(self.__onObjectAdded, 'object.added')
 
    def __onObjectAdded(self, data, extra1, extra2=None):
        # no longer need to access data through message.data.
        print('Object', repr(data), 'is added')
        print(extra1)
        if extra2:
            print(extra2)

a = SomeReceiver()
pub.sendMessage('object.added', data=42, extra1='hello!')
pub.sendMessage('object.added', data=42, extra1='hello!', extra2=[2, 3, 5, 7, 11, 13, 17, 19, 23])