How do you handle multiple browser tabs or windows in Selenium?

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In Selenium, handling multiple browser tabs or windows involves switching the WebDriver's context to the desired window using window handles. Each tab or window opened by the browser has a unique identifier, accessible via driver.window_handles. Here's how it's done:

1. Open a new tab/window – This can be triggered by a link or JavaScript.

2. Get window handles – driver.window_handles returns a list of all window handles.

3. Switch context – Use driver.switch_to.window(handle) to switch to a specific tab or window.

4. Perform actions – Once switched, interact with elements as usual.

5. Close and return – Optionally, close the current tab using driver.close() and return to the original using driver.switch_to.window(original_handle).

Always ensure proper switching before interacting with elements to avoid NoSuchElementException.

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