> *Ron A* /Wed Jan 7 18:41:15 EST 2004/
>
> I'm experimenting and would like 'yes' to be printed only if 5 is
not in
> the list, but I want to look in each list. This prints out two
yeses.
> How do I get it to print just one 'yes'?
>
> x = [[1,2,3],[2,4,6],[8,4,5,6],[9,8,7]]
>
> for num in x:
> if 5 in num:
> break
> else:
> print 'yes'
There are several ways to do this but the two that I would suggest
are:
for num in x:
if 5 in num:
found = True
break
if found: print 'yes'
Or using list comprehensions(Which you probably haven't discovered
yet)
resp = ['yes' for num in x if 5 in num]
if resp: print resp[0]
HTH
Alan G
Author of the Learn to Program web tutor
http://www.freenetpages.co.uk/hp/alan.gauld
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