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[Roy Smith]

In article <mailman.10026.1400116640.18130.python-list at python.org>,
 Mark Lawrence <breamoreboy at yahoo.co.uk> wrote:

> I still remember the cry of anguish when the guy in the computer 
> building at (the then) Portsmouth Polytechnic dropped his cardboard box 
> of punch cards that made up his end of course project.

That's why you punch sequence numbers in columns 73-80.  If the cards 
get out of order, just run the deck through the sorter.