How to Build a Linked List Node Class in Python

class Node:
    def __init__(self, data):
        self.data = data
        self.next = None

class LinkedList:
    def __init__(self):
        self.head = None

    def insert(self, data):
        new_node = Node(data)
        if not self.head:
            self.head = new_node
        else:
            current = self.head
            while current.next:
                current = current.next
            current.next = new_node

    def remove(self, data):
        if not self.head:
            return False
        if self.head.data == data:
            self.head = self.head.next
            return True
        current = self.head
        while current.next:
            if current.next.data == data:
                current.next = current.next.next
                return True
            current = current.next
        return False

    def display(self):
        result = []
        current = self.head
        while current:
            result.append(current.data)
            current = current.next
        return result

if __name__ == "__main__":
    ll = LinkedList()
    ll.insert(10)
    ll.insert(20)
    ll.insert(30)
    print("After insert:", ll.display())
    print("Remove 20:", ll.remove(20))
    print("After remove:", ll.display())
    print("Remove 99:", ll.remove(99))