"Travis" guest list name checker (Ziyad Yehia Udemy course)

[ThomasL]

This would do it nicer, but as already mentioned you should rename the main() function e.g. into get_guests() or so.

guest_list, user_name = main()

def get_guests():
    """
    Initializes the two primary variables and returns them for future use
    """
    guest_list = ["Justin Trudeau", "Joseph Stalin", "Caesar", "Nero",]
    user_name = input("What is your name? Please spell it in full! >>  \n")
    return guest_list, user_name
 
 
def check(guest_list, user_name):
    """
    Verifies the user name input and determines if in guest list
    """
    print(guest_list, user_name)
    if user_name in guest_list:
        print(f"Welcome, {user_name}!")
    if user_name not in guest_list:
        print(f"Hi {user_name}, but unfortunately you are not in the guest list.")
        include_proposition = input("Would you like to join us anyways? Please enter a Yes or a No >> \n")
        # THE NEXT LINE DOES NOT WORK! DO IT AS 3 LINES ABOVE!
        if include_proposition == ("Yes", "Y", "y"):
        # ------------------------------------------
            guest_list.append(user_name)
            print(f"Thanks, {user_name}! You've been added. Please enter.")
        # THE NEXT LINE DOES NOT WORK! SEE ABOVE!
        if include_proposition == ("No", "N", "n"):
        # -----------------------------------------
            print("OK! Have a good night then, my friend!")
        else:
            print("Sorry, I didn't get that. Please enter your selection again")
 

def main():
    guest_list, user_name = get_guests()
    check(guest_list, user_name)

if __name__ == "__main__":
    main()