experiments.py

import experiments
from experiments import *

class PythonImplementation(Communicatable):
    def __init__(self, number):
        Communicatable.__init__(self)
        self.number = number
    def GetMessage(self):
        return self.number
    def Communicate(self, destination):
        destination.Listen(self)
    def Listen(self, originator):
        print "Python: Get message of " + str(originator.GetMessage())

c = CImplementation(1337)
p = PythonImplementation(8888)

c.Communicate(p)
#When entered manually, c.Communicate(p) yields
#Traceback (most recent call last):
#  File "<stdin>", line 1, in <module>
#TypeError: No to_python (by-value) converter found for C++ type: class boost::shared_ptr<class Communicatable>

p.Communicate(c)        # This works okay