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The following code snippet is taken from the Python 2.6
multiprocessing documentation with a simple change and this change
does not work. I would like to know how to make it work or something
similar.
I want to pass a Connection object to the MathsClass.
I get the following error on Windows:

Traceback (most recent call last):
File "c:\apps\python26\lib\multiprocessing\managers.py" , line 214,
in serve_cl
ient
request = recv()
TypeError: Required argument 'handle' (pos 1) not found


from multiprocessing.managers import BaseManager
from multiprocessing import Pipe # I added this

class MathsClass(object):
def set(self, conn): # I added the set() function
self.conn = conn
def add(self, x, y):
return x + y
def mul(self, x, y):
return x * y

class MyManager(BaseManager):
pass

MyManager.register('Maths', MathsClass)

if __name__ == '__main__':
parent_conn, child_conn = Pipe() # I added this
manager = MyManager()
manager.start()
maths = manager.Maths()
print maths.add(4, 3) # prints 7
print maths.mul(7, # prints 56
maths.set(child_conn) # I added this, error is thrown here