class Dictionary:
    backing: "list" = [None] * 26

    def hash(self, key: str):
        return ord(key) - 97
    
    def get(self, key: str):
        index = self.hash(key)
        return self.backing[index]

    def set(self, key: str, value):
        index = self.hash(key)
        self.backing[index] = value

sample_dict = Dictionary()
sample_dict.set("h", "hello")
sample_dict.set("i", "hello")
print(sample_dict.get("j"))
print(sample_dict.get("i"))