WebDriver setup (ChromeDriver, GeckoDriver) in Selenium Python - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the Selenium WebDriver module.

Selenium Python

from selenium import [1]

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

Abrowser

Bdriver

Cselenium

Dwebdriver

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'driver' instead of 'webdriver' causes import errors.

Importing 'selenium' alone does not provide browser control.

The correct import is webdriver from the Selenium package to control browsers.

2fill in blank

medium

Complete the code to create a Chrome WebDriver instance.

Selenium Python

driver = webdriver.[1]()

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

AChrome

BEdge

CFirefox

DSafari

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase 'chrome' causes attribute errors.

Choosing a different browser name launches the wrong browser.

To launch Chrome browser, use webdriver.Chrome().

3fill in blank

hard

Fix the error in the code to set up GeckoDriver for Firefox.

Selenium Python

driver = webdriver.[1]()

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

AChrome

BFirefox

CGecko

Dfirefox

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase 'firefox' causes attribute errors.

Trying to use 'Gecko' is invalid in Selenium WebDriver.

The correct class name is Firefox with capital F to create a Firefox driver.

4fill in blank

hard

Fill in the blank to specify the path to ChromeDriver executable correctly.

Selenium Python

driver = webdriver.Chrome(executable_path=[1])

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

A"/usr/local/bin/chromedriver"

B"chromedriver.exe"

C"/"

D"\\"

Attempts:

3 left

💡 Hint

Common Mistakes

Using backslash \\ on Unix causes path errors.

Omitting quotes around the path causes syntax errors.

The path to the ChromeDriver executable is a string like "/usr/local/bin/chromedriver" on Unix systems.

5fill in blank

hard

Fill all three blanks to import WebDriver, create Firefox driver, and open a URL.

Selenium Python

from selenium import [1]
driver = [2].Firefox()
driver.[3]("https://example.com")

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

Awebdriver

Cget

Dfirefox

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase 'firefox' instead of 'webdriver' for driver creation.

Using 'open' instead of 'get' to open a URL.

Import webdriver, create Firefox driver with webdriver.Firefox(), and open URL with driver.get().

Practice

1. What is the main purpose of using ChromeDriver or GeckoDriver in Selenium Python?

easy

A. To connect Selenium scripts with the browser for automation

B. To write test cases in Python

C. To create HTML reports of test results

D. To manage database connections during tests

Solution

1. Step 1: Understand WebDriver role

   WebDriver acts as a bridge between Selenium scripts and the browser.

2. Step 2: Identify driver purpose

   ChromeDriver and GeckoDriver are specific drivers to control Chrome and Firefox browsers respectively.

3. Final Answer:

   To connect Selenium scripts with the browser for automation -> Option A

4. Quick Check:

   Driver connects Selenium to browser = B [OK]

Hint: Drivers link Selenium to browsers for automation [OK]

Common Mistakes:

• Thinking drivers write test cases
• Confusing drivers with reporting tools
• Assuming drivers manage databases

2. Which of the following is the correct way to import and set up ChromeDriver using Selenium 4+ in Python?

easy

A. from selenium import webdriver
from selenium.webdriver.chrome.service import Service
service = Service('path/to/chromedriver')
driver = webdriver.Chrome(service=service)

B. import webdriver
driver = webdriver.Chrome('path/to/chromedriver')

C. from selenium.webdriver import ChromeDriver
service = ChromeDriver('path/to/chromedriver')
driver = webdriver.Chrome(service)

D. from selenium import webdriver
service = webdriver.Chrome('path/to/chromedriver')
driver = webdriver.Chrome(service)

Solution

1. Step 1: Check import statements

   Correct import for Service class is from selenium.webdriver.chrome.service import Service.

2. Step 2: Verify driver initialization

   Driver must be created with webdriver.Chrome(service=service) passing the Service object.

3. Final Answer:

   from selenium import webdriver from selenium.webdriver.chrome.service import Service service = Service('path/to/chromedriver') driver = webdriver.Chrome(service=service) -> Option A

4. Quick Check:

   Use Service class and pass to Chrome() = A [OK]

Hint: Use Service class and pass it to Chrome() constructor [OK]

Common Mistakes:

• Passing driver path directly to Chrome() without Service
• Wrong import paths for Service
• Using incorrect class names like ChromeDriver

3. What will happen if you run this code snippet?

from selenium import webdriver
from selenium.webdriver.chrome.service import Service
service = Service('wrong/path/chromedriver')
driver = webdriver.Chrome(service=service)
driver.get('https://example.com')

medium

A. The browser opens and loads the page successfully

B. The driver automatically downloads the correct ChromeDriver

C. A FileNotFoundError or WebDriverException is raised due to wrong driver path

D. The code runs but the page does not load

Solution

1. Step 1: Analyze driver path usage

   Service is given a wrong path to ChromeDriver executable.

2. Step 2: Understand error on invalid path

   Selenium cannot find the driver file, so it raises an error like FileNotFoundError or WebDriverException.

3. Final Answer:

   A FileNotFoundError or WebDriverException is raised due to wrong driver path -> Option C

4. Quick Check:

   Wrong driver path causes error = D [OK]

Hint: Wrong driver path causes immediate error [OK]

Common Mistakes:

• Assuming driver auto-downloads
• Expecting browser to open without driver
• Thinking code runs but page stays blank

4. Identify the error in this GeckoDriver setup code and choose the correct fix:

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

medium

A. webdriver.Firefox() does not accept service parameter

B. Missing import of Service class from selenium.webdriver.firefox.service

C. Incorrect driver path format, should use double backslashes

D. driver.get() should be called before creating driver

Solution

1. Step 1: Check imports

   Service class for Firefox must be imported from selenium.webdriver.firefox.service.

2. Step 2: Verify usage

   Without importing Service, the code will raise NameError or similar.

3. Final Answer:

   Missing import of Service class from selenium.webdriver.firefox.service -> Option B

4. Quick Check:

   Import Service for Firefox driver = C [OK]

Hint: Always import Service class for the browser driver used [OK]

Common Mistakes:

• Not importing Service class
• Wrong path format causing silent failure
• Calling driver.get() before driver creation

5. You want to run Selenium tests on Firefox but your Firefox browser updated to version 115. Which is the best practice to ensure your GeckoDriver setup works correctly?

hard

A. Remove the Service class and pass the driver path directly to webdriver.Firefox()

B. Use the existing GeckoDriver without changes; Selenium handles compatibility automatically

C. Switch to ChromeDriver since GeckoDriver does not support Firefox 115

D. Download the GeckoDriver version compatible with Firefox 115 and update the Service path accordingly

Solution

1. Step 1: Understand driver-browser compatibility

   GeckoDriver must match the Firefox browser version to work properly.

2. Step 2: Apply best practice for updates

   Download the correct GeckoDriver version for Firefox 115 and update your code to use its path.

3. Final Answer:

   Download the GeckoDriver version compatible with Firefox 115 and update the Service path accordingly -> Option D

4. Quick Check:

   Match driver version with browser version = A [OK]

Hint: Always match driver version with browser version [OK]

Common Mistakes:

• Assuming Selenium auto-updates drivers
• Switching browsers unnecessarily
• Passing driver path without Service class