Is It In There? 🔍

Python has a magic word for searching a list: in.

It answers a yes-or-no question — "is this thing inside that list?" — which makes it perfect for an if:

squad = ["Ana", "Bo", "Cy"]

if "Bo" in squad:
    print("Bo is here! 🎉")
else:
    print("No Bo today...")

You can search with a variable too:

visitor = "Cy"
if visitor in squad:
    print("Come on in!")

It even works on strings — if "z" in name: checks for a letter inside a word!

Your mission

Build a party door checker.

1. Make a list called guest_list with at least 5 names
2. Make a variable called visitor holding one name
3. Use if / else with in to print whether they're welcome
4. Both messages should include the visitor's name (f-string time!)

Then try it: change visitor to someone NOT on the list and run again. 🚪