<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:

def intermediate(self, subname):
        '''Send the time that has passed since our last measurement

        :keyword subname: The subname to report the data to (appended to the
            client name)
        :type subname: str
        '''
        t = time.time()
        response = self.send(subname, t - self._last)
        self._last = t
        return response