Why does the palindrome function built on top of the Deque class doesn't work?

Question

I created the following palindrome function using a Deque class. The program should return True and False. However, nothing is returned when I run the program. Can anyone ascertain why?

class Deque:

    def __init__(self):
        self.items = []

    def add_front(self, item):
        
        self.items.insert(0, item)

    def add_rear(self, item):
        
        self.items.append(item)

    

def palindrome(word):
    lst1 = Deque()
    lst2 = Deque()

    [lst1.add_front(i) for i in word.lower()]
    [lst2.add_rear(i) for i in word.lower()]

    return lst1.items == lst2.items

palindrome('racecar')
palindrome('oranges')