WebDriver setup (ChromeDriver, GeckoDriver) in Selenium Python - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ Predict Output

intermediate

What is the output of this Selenium WebDriver setup code?

Consider the following Python code snippet that sets up a Chrome WebDriver and opens a webpage. What will be printed after execution?

Selenium Python

from selenium import webdriver
from selenium.webdriver.chrome.service import Service

service = Service(executable_path='/path/to/chromedriver')
driver = webdriver.Chrome(service=service)
driver.get('https://example.com')
print(driver.title)
driver.quit()

A Example Domain

B ChromeDriver

C https://example.com

D selenium.common.exceptions.WebDriverException

💡 Hint

The driver.title returns the title of the current page loaded by the browser.

The code opens 'https://example.com' in Chrome and prints the page title, which is 'Example Domain'.

❓ assertion

intermediate

Which assertion correctly verifies the page title after WebDriver opens a page?

You want to check that the page title is exactly 'Welcome Page' after opening a URL with Selenium WebDriver in Python. Which assertion is correct?

Selenium Python

from selenium import webdriver
from selenium.webdriver.chrome.service import Service

service = Service(executable_path='/path/to/chromedriver')
driver = webdriver.Chrome(service=service)
driver.get('https://example.com/welcome')
# Which assertion below is correct?

A assert driver.title != 'Welcome Page'

B assert driver.title == 'Welcome Page'

C assert 'Welcome Page' in driver.current_url

D assert driver.page_source == 'Welcome Page'

💡 Hint

The page title is accessed by driver.title, not current_url or page_source.

To verify the page title, use assert driver.title == 'Welcome Page'. Other options check wrong properties.

🔧 Debug

advanced

Why does this GeckoDriver setup code raise an error?

This Python code tries to start Firefox WebDriver but raises an error. Identify the cause.

Selenium Python

from selenium import webdriver
from selenium.webdriver.firefox.service import Service

service = Service('/path/to/geckodriver')
driver = webdriver.Firefox(service=service)
driver.get('https://example.com')
driver.quit()

A Firefox browser is not installed on the system

B The Service class is not imported from selenium.webdriver.firefox.service

C The path to geckodriver is incorrect or missing execute permission

D driver.get() method is deprecated and causes error

💡 Hint

Check if the geckodriver executable path is valid and accessible.

If geckodriver path is wrong or lacks execute permission, WebDriver raises an error on startup.

❓ locator

advanced

Which locator strategy is best for stable element selection in Selenium?

You want to select a button element that has a unique id 'submit-btn' on a webpage. Which locator is best practice for stability and speed?

A driver.find_element('id', 'submit-btn')

B driver.find_element('xpath', '//button[@id="submit-btn"]')

C driver.find_element('css selector', 'button#submit-btn')

D driver.find_element('class name', 'submit-btn')

💡 Hint

Using id locator is usually fastest and most reliable if id is unique.

Locating by id is preferred for unique elements because it is fast and less brittle than xpath or css selectors.

❓ framework

expert

What is the correct way to initialize ChromeDriver with options in Selenium Python?

You want to start ChromeDriver with headless mode enabled and disable GPU usage. Which code snippet correctly sets this up?

A

from selenium import webdriver
from selenium.webdriver.chrome.service import Service

service = Service('/path/to/chromedriver')
driver = webdriver.Chrome(service=service)
driver.add_argument('--headless')
driver.add_argument('--disable-gpu')
driver.get('https://example.com')

B

from selenium import webdriver
options = webdriver.ChromeOptions()
options.headless = True
options.disable_gpu = True
driver = webdriver.Chrome(options=options)
driver.get('https://example.com')

C

from selenium import webdriver
from selenium.webdriver.chrome.options import Options

options = Options()
options.set_headless(True)
options.set_disable_gpu(True)
driver = webdriver.Chrome(options=options)
driver.get('https://example.com')

D

from selenium import webdriver
from selenium.webdriver.chrome.service import Service
from selenium.webdriver.chrome.options import Options

options = Options()
options.add_argument('--headless')
options.add_argument('--disable-gpu')
service = Service('/path/to/chromedriver')
driver = webdriver.Chrome(service=service, options=options)
driver.get('https://example.com')

💡 Hint

Options must be created and passed to the driver constructor before starting the browser.

Option D correctly creates Options, adds arguments, creates Service, and passes both to Chrome constructor.