TypeError:“'trinode'object is not callable”我的代码有什么问题?

2024-03-29 12:37:28 发布

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我写这段代码是为了测试前缀树,但是由于某种原因,我得到错误“TrieNode”对象不可调用。有人能帮我解决这个错误吗?

为什么TrieNode()类不可调用?

# Prefix Tree or Trie Data Structure
class TrieNode(object):
    def __init__(self):
        self.children = {}
        self.endOfWord = False

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

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

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

    return node.endWord

def startsWith(self,prefix):
    node = self.root
    for w in prefix:
        if w not in node.children:
            return False
        node = node.children[w]
    return True

if __name__ == "__main__":
    trie = Trie()
    trie.insert("apple")
    trie.insert("apples")
    trie.insert("bat")
    trie.insert("bate")    
    print trie.search("apple")

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