Missing last = n in LinkedList remove method

[rodrigo-albuquerque]

def remove(self, value):
    n = self.head
    last = None
    while n != None:
        if n.value == value:
            if last == None:
                self.head = self.head.next
            else:
                last.next = n.next
            return True
        last = n  **<-- This is missing**
        n = n.next
    return False