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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 rate_limit_ensembl_requests(self):
 """ limit ensembl requests to one per 0.067 s """

        
        current_time = time.time()
        diff_time = current_time - self.prior_time
        
        # sleep until the current rate limit period is finished
        if diff_time < self.rate_limit:
            time.sleep(self.rate_limit - diff_time)
        
        # set the access time to now, for later checks
        self.prior_time = time.time()