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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 run_experiment(self):
 """Sign up, run the ``participate`` method, then sign off and close the driver."""

        try:
            self.sign_up()
            self.participate()
            if self.sign_off():
                self.complete_experiment("worker_complete")
            else:
                self.complete_experiment("worker_failed")
        finally:
            self.driver.quit()