subset permutations

[me you]

Hello all,

I'm a beginner with programming. Trying to teach myself with that excellent
rat book. Unfortunately I just can't seem to figure out a simple problem
that has come up at my work (biology lab):
let's say I have a list
['A','C','D','E','F','G','H','I','K','L','M','N','P','Q','R','S','T','V','W','Y']
. I need to generate permutations of this list. I have found plenty of code
on the web to generate ALL possible permutations. What I need are all
possible 4-letter permutations. I cannot seem to figure out how to modify
Mike Davie's permutation generator
http://www.bigbold.com/snippets/posts/show/753 to acheive this. Any help
would be appreciated.

Thanks
DG
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20051208/a4380924/attachment.html>