class Tokenizer:
   def __init__(self):
       self.tokens = []

   def tokenize(self, text):
       for char in text:
           self.tokens.append(ord(char))
       return self.tokens

   def detokenize(self, tokens):
       text = ''.join(chr(token) for token in tokens)
       return text

def main():
   phi_tokenizer = Tokenizer()
   text = "hello world"
   tokenized = phi_tokenizer.tokenize(text)
   print(tokenized)
   detokenized = phi_tokenizer.detokenize(tokenized)
   print(detokenized)

if __name__ == "__main__":
   main()