Python-сообщество

String mainWindow = driver.getWindowHandle();
List<String> windows = new ArrayList<String>(driver.getWindowHandles());
driver.switchTo().window(windows.get(1));
driver.close();
driver.switchTo().window(mainWindow);

listHandles = [];
mainWindow = driver.window_handles[0];

for handle in driver.window_handles:
    listHandles.append(handle);

driver.switch_to_window(listHandles[1]);

driver.close();