whenever I try to use a for loop on a list to get the individual items it displays the first item only could some one help me with this?

x = set()

display_list = []

count_list = []

while True:

items = input("> ").upper()
if items != "Q":
    x.add(items)
    count_list.append(items)
    count_list.count(items)

elif items == "Q":
    display_list.extend(x)
    for i in display_list:
        print(i)
        exit()