["python","loops","if-statement","for-loop"]
Pythonic way to combine for-loop and if-statement

I know how to use both for loops and if statements on separate lines, such as: >>> a = [2,3,4,5,6,7,8,9,0] ... xyz = [0,12,4,6,242,7,9] ... for x in xyz: ... if x in a: ... print(x) 0,4,6,7,9 And I know I can use a list comprehension to combine these when the statements are simple, such as: print([x for x in xyz if x in a]) But what I can't find is a good example anywhere (to copy and learn from) demonstrating a complex set of commands (not just "print x") that occur following a combination of a for loop and some if statements. Something that I would expect looks like: for x in xyz if x not in a: print(x...) Is this just not the way python is supposed to work?
You can use generator expressions like this: gen = (x for x in xyz if x not in a) for x in gen: print(x)