How can I write a function that verifies if a list is a non-contiguous sublist of another list, in python?

Question

Examples:

contains([], [4, 6, 5, 0]) -> True
contains([5, 7, 5],[4, 6, 5, 0, 7, 9, 0, 5]) -> True
contains([5, 7, 5],[4, 6, 5, 0, 7, 9, 0]) -> False
contains([5, 7, 5],[4,7,5,2,5]) -> False

I did some stuff but it clearly wasn't working, so I guess I really don't have a clue how to do it.