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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_token(self, text, start=0):
 """Retrieve the next token from some text. Args: text (str):
 the text from which tokens should be extracted Returns: (token_kind, token_text):
 the token kind and its content. """

        best_class = best_match = None

        for token_class, match in self.matching_tokens(text):
            if best_match and best_match.end() >= match.end():
                continue
            best_match = match
            best_class = token_class

        return best_class, best_match