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TL;DR - Show Me The Code​

6-open-new-window/code/python/new_window_and_tab.py
import pytest
from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait

@pytest.fixture
def driver_setup_teardown():
    driver = webdriver.Firefox()
    yield driver
    driver.quit()

def test_new_window(driver_setup_teardown):
    driver = driver_setup_teardown
    driver.get('https://the-internet.herokuapp.com/windows')
    driver.switch_to.new_window('window')
    driver.get('https://the-internet.herokuapp.com/typos')
    assert len(driver.window_handles) == 2

def test_new_tab(driver_setup_teardown):
    driver = driver_setup_teardown
    driver.get('https://the-internet.herokuapp.com/windows')
    driver.switch_to.new_window('tab')
    driver.get('https://the-internet.herokuapp.com/typos')
    assert len(driver.window_handles) == 2
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Code Walkthrough​

Importing Libraries​

The first lines are pulling in our requisite libraries our testing framework (e.g., import pytest), driving the browser with Selenium (e.g., from selenium import webdriver), and a locator strategy to find the elements (e.g. from selenium.webdriver.common.by import By), and wire up some setup and teardown methods for our tests.

Setup and Teardown​

Afterward, we set up and tear down the browser instance. The @pytest.fixture decorator is used to create a fixture that sets up and tears down the browser. The yield keyword is used to pause the fixture until the test is completed. After the test is completed, the fixture resumes and executes the teardown code (in this case, driver.quit()).

Open New Window​

test_new_window shows how to open a new window, switch to it, and assert the number of window handles open. They key to this is the driver.switch_to.new_window('window') line. Which opens a new window and switches to it.

Open New Tab​

test_new_tab shows how to open a new tab, switch to it, and assert the number of window handles open. They key to this is the driver.switch_to.new_window('tab') line. Which opens a new tab and switches to it.

Executing the Test​

Before executing the test, we need to install the required libraries. We can do this by running pip install -r requirements.txt from the command-line. The requirements.txt file contains the libraries we need to install.

Toggle to see the requirements.txt file.
6-open-new-window/code/python/requirements.txt
selenium==4.26.1
pytest
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After installing the required libraries, we can run the test by executing pytest new_window_and_tab.py from the command-line.