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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 _obtain_new_ip(self):
 """ Change Tor's IP. """

        with Controller.from_port(
            address=self.tor_address, port=self.tor_port
        ) as controller:
            controller.authenticate(password=self.tor_password)
            controller.signal(Signal.NEWNYM)

        # Wait till the IP 'settles in'.
        sleep(0.5)