[Tutor] for loop

[Gustavo Campanelli]

Ron A wrote:

>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'    
>
>  
>
This code goes to the first list, checks if 5 is there, and as it's not, 
prints a yes (when there is no 5 there), then enters the second, sees 
it's not there and prints another yes, goes to the third and as 5 is in 
there breaks and doesn't do anything more. The code does, in other 
words, exactly what you told it to do, but not what you intended. This 
should do the trick, you had the if evaluating things the oposite way as 
you intended :)

x = [[1,2,3],[2,4,6],[8,4,5,6],[9,8,7]]
for num in x:
    if 5 in num:
        print 'yes'
        break

Gedece, still a python newbie