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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 end(self):
 """Finish up the context."""

        TftpContext.end(self, not self.filelike_fileobj)
        self.metrics.end_time = time.time()
        log.debug("Set metrics.end_time to %s" % self.metrics.end_time)
        self.metrics.compute()