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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 verify( self, headers, serialized_request_env, deserialized_request_env):
 # type: (Dict[str, Any], str, RequestEnvelope) -> None """Verify if the input request timestamp is in tolerated limits. The verify method retrieves the request timestamp and check if it falls in the limit set by the tolerance, by checking with the current timestamp in UTC. :param headers: headers of the input POST request :type headers: Dict[str, Any] :param serialized_request_env: raw request envelope in the input POST request :type serialized_request_env: str :param deserialized_request_env: deserialized request envelope instance of the input POST request :type deserialized_request_env: :py:class:`ask_sdk_model.request_envelope.RequestEnvelope` :raises: :py:class:`VerificationException` if difference between local timestamp and input request timestamp is more than specific tolerance limit """

        local_now = datetime.now(tz.tzutc())
        request_timestamp = deserialized_request_env.request.timestamp
        if (abs((local_now - request_timestamp).seconds) >
                (self._tolerance_in_millis / 1000)):
            raise VerificationException("Timestamp verification failed")