[docs] minor bug in python documentation 2.7 - multiprocessing

[Christian Herdtweck]

Hi all,

   first of all thanks for the work you all put into python - much 
appreciated :-)

   I found a minor bug in the python documentation (version 2.7), 
library reference, multiprocessing package: 
http://docs.python.org/library/multiprocessing.html

In the description of Pipe the docu says:
If duplex is False then the pipe is unidirectional: conn1 can only be 
used for receiving messages and conn2 can only be used for sending messages.

which is exactly the other way round as used in the the example on the 
same page further down, where the first connection sends and the second 
receives:
 >>> from multiprocessing import Pipe
 >>> a, b = Pipe()
 >>> a.send([1, 'hello', None])
 >>> b.recv()

   I do not know which one is correct

   Cheers
     Christian