[Tutor] the and command

[Alan Gauld]

"max baseman" <dos.fool at gmail.com> wrote
> im checking if a number is in all 5 of the other lists and when
> i use the and command it seems to just be checking if it's in a 
> least
> one of the others,


> for num in l2 and l3 and l4 and l5 and l6: # here seems to be the

Try:

if num in I2 and num in I3 and num in I4 and num in I5 and num in I6:

In your case you are 'and'ing the lists which is a boolean expression
and because of how Python does short circuit evaluation it returns
the last list

>>> a = [1,2]
>>> b = [3,4]
>>> a and b
[3, 4]

so

for n in a and b:

is the same as

for n in b:

which iterates over b...

HTH,

-- 
Alan Gauld
Author of the Learn to Program web site
http://www.freenetpages.co.uk/hp/alan.gauld