Dealing with multiple sets

[Gabriel Genellina]

At Wednesday 25/10/2006 21:12, John Henry wrote:

>Oops.  Forgot to mention, I am still using 2.3.

try: set
except NameError: from sets import Set as set

and the code will work almost exactly the same in 2.3/2.4

> > 1) Give me a list of the items that are in all of the sets? (3 in the
> > above example)

a & b & c
& is the intersection operator.

> > 2) Give me a list of the items that are not in all of the sets? (1,2 in
> > the above example)

(a | b | c) - (a & b & c)
(take the union of all items) except (the ones that are 
simultaneously in all sets)


-- 
Gabriel Genellina
Softlab SRL 

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