Remove items from lists that doesn't match two lists

I didn’t know how to properly define this question, but here’s the problem.

I have two lists like this:

x = ['Monday', 'Tuesday', 'Wednesday', 'Thursday']
z = ['Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday']

I’d like to match up the two lists and remove any items that do not exist in both lists. That means that the output would in this case be:

y = ['Wednesday', 'Thursday']

I tried using the zip() function but couldn’t get it to work. Do you have any ideas?

Thanks beforehand.

>Solution :

Do this:

x = ['Monday', 'Tuesday', 'Wednesday', 'Thursday']
z = ['Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday']
res = list(set(x)&set(z))
print(res)

This would give you the desired result