如何使用Thread run()实现Trie迭代器

import threading

class TrieNode:
    def __init__(self):
        self.children = {}
        self.is_end_of_word = False

    def iterator(self, node, word, result):
        if node.is_end_of_word:
            result.append(word)
        for char, child in node.children.items():
            self.iterator(child, word + char, result)

class Trie:
    def __init__(self):
        self.root = TrieNode()

    def insert(self, word):
        node = self.root
        for char in word:
            if char not in node.children:
                node.children[char] = TrieNode()
            node = node.children[char]
        node.is_end_of_word = True

    def search(self, word):
        node = self.root
        for char in word:
            if char not in node.children:
                return False
            node = node.children[char]
        return node.is_end_of_word

    def iterator(self):
        result = []
        self.root.iterator(self.root, '', result)
        return result

def trie_iterator(trie):
    result = trie.iterator()
    print(result)

def main():
    trie = Trie()
    trie.insert("apple")
    trie.insert("banana")
    trie.insert("orange")

    thread = threading.Thread(target=trie_iterator, args=(trie,))
    thread.start()
    thread.join()

if __name__ == "__main__":
    main()