class WordDictionary:

    def __init__(self):
        """
        Initialize your data structure here.
        """
        self.word_dictionary = {}

    def addWord(self, word: str) -> None:
        """
        Adds a word into the data structure.
        """
        if self.word_dictionary.get(word) is None:
            self.hashset[key] = key



    def search(self, word: str) -> bool:
        """
        Returns if the word is in the data structure. A word could contain the dot character '.' to represent any one letter.
        """

import re
k = '.ad'
word = 'bad'
re.search(word, k)

        self.word_di
        import re
        for i in self.word_dictionary.items():



# Your WordDictionary object will be instantiated and called as such:
# obj = WordDictionary()
# obj.addWord(word)
# param_2 = obj.search(word)
