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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 wait_for_element_not_present(self, locator):
 """ Synchronization helper to wait until some element is removed from the page :raises: ElementVisiblityTimeout """

        for i in range(timeout_seconds):
            if self.driver.is_element_present(locator):
                time.sleep(1)
            else:
                break
        else:
            raise ElementVisiblityTimeout("%s presence timed out" % locator)
        return True