pairs from a list

[Paul Rubin]

Alan Isaac <aisaac at american.edu> writes:
> (Of course the print statement is just illustrative.)
> What is the fastest way? (Ignore the import time.)

You have to try a bunch of different ways and time them.  One
idea (untested):

    def pairs(seq):
       while True:
           yield (seq.next(), seq.next())