Why Grid enables parallel execution in Selenium Python - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to start a remote WebDriver session using Selenium Grid.

Selenium Python

driver = webdriver.Remote(command_executor='[1]', desired_capabilities=DesiredCapabilities.CHROME)

Drag options to blanks, or click blank then click option'

Ahttp://localhost:4444/wd/hub

Bhttp://localhost:5555/wd/hub

Chttp://127.0.0.1:8080

Dhttp://gridserver:1234

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong port number

Omitting '/wd/hub' in the URL

Using local WebDriver instead of remote

The Selenium Grid hub usually runs at http://localhost:4444/wd/hub. This URL is used to connect the remote WebDriver to the Grid.

2fill in blank

medium

Complete the code to specify the browser capability for running tests on Selenium Grid.

Selenium Python

capabilities = DesiredCapabilities.[1].copy()

Drag options to blanks, or click blank then click option'

AFIREFOX

BCHROME

CEDGE

DSAFARI

Attempts:

3 left

💡 Hint

Common Mistakes

Using a capability not supported by the Grid nodes

Misspelling the browser name

Using local browser capabilities instead of DesiredCapabilities

To run tests on Chrome browser via Selenium Grid, use DesiredCapabilities.CHROME.

3fill in blank

hard

Fix the error in the code to enable parallel test execution on Selenium Grid.

Selenium Python

from selenium import webdriver
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities

options = webdriver.ChromeOptions()
options.add_argument('--headless')
driver = webdriver.Remote(command_executor='http://localhost:4444/wd/hub', desired_capabilities=[1])

Drag options to blanks, or click blank then click option'

ADesiredCapabilities.CHROME

BDesiredCapabilities.FIREFOX

Cwebdriver.ChromeOptions()

Doptions

Attempts:

3 left

💡 Hint

Common Mistakes

Passing options instead of capabilities

Using capabilities for a different browser

Omitting desired_capabilities parameter

The desired_capabilities parameter expects a capabilities object like DesiredCapabilities.CHROME. Passing options or other objects causes errors.

4fill in blank

hard

Fill both blanks to create a test that runs two sessions in parallel on Selenium Grid.

Selenium Python

from selenium import webdriver
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities

session1 = webdriver.Remote(command_executor='[1]', desired_capabilities=DesiredCapabilities.CHROME)
session2 = webdriver.Remote(command_executor='[2]', desired_capabilities=DesiredCapabilities.FIREFOX)

Drag options to blanks, or click blank then click option'

Ahttp://localhost:4444/wd/hub

Bhttp://localhost:5555/wd/hub

Chttp://127.0.0.1:4444/wd/hub

Dhttp://gridserver:4444/wd/hub

Attempts:

3 left

💡 Hint

Common Mistakes

Using different URLs for the same Grid hub

Using invalid URLs

Confusing node URLs with hub URL

Both sessions connect to the same Selenium Grid hub URL to run tests in parallel on different browsers.

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension that filters test results with status 'passed' and counts them.

Selenium Python

passed_tests = {test_id: result for test_id, result in test_results.items() if result['status'] [1] 'passed' and result['duration'] [2] 0 and result['retries'] [3] 0}

Drag options to blanks, or click blank then click option'

A==

B>

D!=

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong comparison operators

Mixing up equality and inequality

Forgetting to check all conditions

The comprehension filters tests where status equals 'passed', duration is greater than 0, and retries is not equal to 0.