[Tutor] for loop
alan.gauld at freenet.co.uk
Tue Apr 19 09:37:08 CEST 2005
> *Ron A* /Wed Jan 7 18:41:15 EST 2004/
> I'm experimenting and would like 'yes' to be printed only if 5 is
> the list, but I want to look in each list. This prints out two
> 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:
> print 'yes'
There are several ways to do this but the two that I would suggest
for num in x:
if 5 in num:
found = True
if found: print 'yes'
Or using list comprehensions(Which you probably haven't discovered
resp = ['yes' for num in x if 5 in num]
if resp: print resp
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