How to sort list
Klaus Alexander Seistrup
klaus at seistrup.dk
Tue Nov 21 14:23:36 EST 2006
Lad <python at hope.cz> wrote:
> I have a list of emails and I would like to sorted that list by
> domains
> E.g.
> If the list is
>
> Emails=['a at hotmail.com','a at yahoo.com','b at hotmail.com','c at yahoo.com',....]
>
> after sorting I would like to have
> Emails=['a at hotmail.com','b at hotmail.com','a at yahoo.com','c at yahoo.com',....]
>
> What is the best/easiest way?
Decorate-sort-undecorate?
#v+
array = []
for addr in Emails:
(user, domain) = addr.split('@')
array.append((domain, user, addr))
# end for
array.sort()
SortedEmails = [addr for (user, domain, addr) in array]
#v-
Cheers,
--
Klaus Alexander Seistrup
http://klaus.seistrup.dk/
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