Finding something in a list

The following function contains_2(lst) is partially complete. Replace each CHANGEME such that the function returns True once it finds a 2 in lst, or False if there is no 2 in lst. You can assume lst is a list of integer values.

Hint: for the first CHANGEME you will decide the name of this variable.

(You might think… can’t I just use in to do that? Indeed you can… but I’d like you to implement your own version of in!)

Sample Input 1:

5 3 2 8

Sample Output 1:

True

Sample Input 2:

2 6

Sample Output 2:

True

Sample Input 3:

1 3 5 7 9

Sample Output 3:

False