def search(self, word): index = self.hash_function(word) bucket = self.table[index] found_meanings = [] for w, meanings in bucket: if w == word: found_meanings.extend(meanings) return found_meanings if found_meanings else None def _save_word_to_file(self, word, pos, meaning): filename = f'dictionary/{word[0].lower()}.txt' with open(filename, 'a') as file: file.write(f"{word}\t{pos}\t{meaning}\n") def _delete_word_from_file(self, word): filename = f'dictionary/{word[0].lower()}.txt' with open(filename, 'r') as file: lines = file.readlines() with open(filename, 'w') as file: for line in lines: w, _, _ = line.strip().split('\t') if w != word: file.write(line)的意思

这段代码是一个Python类的两个私有方法，用于字典的存储和删除。其中，search方法接受一个单词作为参数，通过哈希函数将其映射到一个桶中，然后在该桶中查找单词并返回其含义。如果找不到单词，返回None。_save_word_to_file方法接受一个单词、词性和含义作为参数，将其写入以单词首字母为文件名的txt文件中。_delete_word_from_file方法接受一个单词作为参数，从相应的txt文件中删除该单词的所有行。