python - if not in list [duplicate]

Answer 1

Your code should work, but you can also try:

    if not item in mylist :

Answer 2

if I got it right, you can try

for item in [x for x in checklist if x not in mylist]:
    print (item)

Answer 3

How about this?

for item in mylist:
    if item in checklist:
        pass
    else:
       # do something
       print item

Answer 4

You better do this syntax

if not (item in mylist):  
    Code inside the if