[Tutor] Comparing two lists

[Michael Powe]

Hello,

I have two lists.

alist = ['label', 'guid']

blist = ['column0label', 'column1label', 'dimension0guid',
'description', 'columnid'] 

I want to iterate over blist and extract the items that match my
substrings in alist; alternatively, throw out the items that aren't in
alist (but, I've had bad experiences removing items from lists "in
place," so I tend toward the "copy" motif.)

In real life, blist column entries could have embedded column numbers
from 0 to 19.

I can do this with excrutiatingly painful 'for' loops.  Looking for
something more efficient and elegant.  

Thanks.

mp

-- 
Michael Powe		michael at trollope.org		Naugatuck CT USA

"The secret to strong security: less reliance on secrets."
-- Whitfield Diffie
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