[mark@toy ~/tmp]$ python pipefifo.py
Parent 657 got "Spam 000" at 968390065.865
Parent 657 got "Spam 001" at 968390066.865
Parent 657 got "Spam 002" at 968390068.865
Parent 657 got "Spam 003" at 968390071.865
Parent 657 got "Spam 004" at 968390075.865
Parent 657 got "Spam 000" at 968390075.867
Parent 657 got "Spam 001" at 968390076.865
Parent 657 got "Spam 002" at 968390078.865

[mark@toy ~/tmp]$ python pipefifo.py -child