Full page screenshot in Selenium Python - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to take a screenshot using Selenium in Python.

Selenium Python

driver = webdriver.Chrome()
driver.get('https://example.com')
driver.save_screenshot('[1]')
driver.quit()

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

Aimage.bmp

Bfullpage.png

Cscreenshot.jpg

Dcapture.gif

Attempts:

3 left

💡 Hint

Common Mistakes

Using unsupported image formats like .gif or .bmp

Forgetting to provide a filename

Using incorrect method names

The save_screenshot method saves the screenshot to the given filename. Using 'fullpage.png' is a common and correct filename for a PNG screenshot.

2fill in blank

medium

Complete the code to scroll the page before taking a screenshot.

Selenium Python

driver = webdriver.Chrome()
driver.get('https://example.com')
driver.execute_script('[1]')
driver.save_screenshot('fullpage.png')
driver.quit()

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

Awindow.scrollBy(0, -100)

Bwindow.scrollTo(0, 0)

Cwindow.scrollTo(0, document.body.scrollHeight)

Dwindow.scrollBy(100, 0)

Attempts:

3 left

💡 Hint

Common Mistakes

Scrolling to the top instead of bottom

Using negative scroll values incorrectly

Not scrolling at all before screenshot

Scrolling to the bottom of the page with 'window.scrollTo(0, document.body.scrollHeight)' ensures the entire page is loaded before taking the screenshot.

3fill in blank

hard

Fix the error in the code to correctly take a screenshot using Selenium in Python.

Selenium Python

driver = webdriver.Chrome()
driver.get('https://example.com')
full_screenshot = driver.get_screenshot_as_file('[1]')
print('Screenshot saved:', full_screenshot)
driver.quit()

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

Afullpage.png

Bscreenshot.txt

Cimage.jpeg

Dcapture.pdf

Attempts:

3 left

💡 Hint

Common Mistakes

Using unsupported file extensions

Confusing method names for screenshots

Not checking the return value of the screenshot method

The get_screenshot_as_file method requires a valid image filename with a supported extension like .png. 'fullpage.png' is correct.

4fill in blank

hard

Fill both blanks to create a dictionary comprehension that stores element IDs and their text content for all elements with class 'item'.

Selenium Python

elements = driver.find_elements(By.CLASS_NAME, '[1]')
texts = {element.get_attribute('[2]'): element.text for element in elements}

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

Aitem

Bid

Cclass

Dname

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong attribute names like 'class' or 'name'

Mixing up class name and id attribute

Not using dictionary comprehension syntax correctly

We find elements by class name 'item' and get their 'id' attribute as keys in the dictionary with their text as values.

5fill in blank

hard

Fill all three blanks to filter elements with text length greater than 5 and save their IDs and texts in a dictionary.

Selenium Python

elements = driver.find_elements(By.CLASS_NAME, '[1]')
filtered = {element.get_attribute('[2]'): element.text for element in elements if len(element.text) [3] 5}

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

Aitem

Bid

C>

D<

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong comparison operators

Using wrong attribute names

Not filtering elements correctly

We find elements with class 'item', get their 'id' attribute, and filter those whose text length is greater than 5.

Practice

1. What is the main advantage of taking a full page screenshot in Selenium?

easy

A. It speeds up the test execution

B. It only captures the visible part of the webpage

C. It captures the entire webpage, including parts not visible on screen

D. It automatically scrolls the page during testing

Solution

1. Step 1: Understand what a full page screenshot means

   A full page screenshot captures the entire webpage, not just the visible part on the screen.

2. Step 2: Compare options with this definition

   Only It captures the entire webpage, including parts not visible on screen correctly states this advantage. Options B, C, and D describe other unrelated behaviors.

3. Final Answer:

   It captures the entire webpage, including parts not visible on screen -> Option C

4. Quick Check:

   Full page screenshot = entire page capture [OK]

Hint: Full page means entire webpage, not just visible part [OK]

Common Mistakes:

• Confusing full page with visible viewport only
• Thinking it speeds up tests automatically
• Assuming it scrolls the page during capture

2. Which Selenium Python method is used to save a full page screenshot in Firefox?

easy

A. driver.get_screenshot_as_file('file.png')

B. driver.save_full_page_screenshot('file.png')

C. driver.save_screenshot('file.png')

D. driver.take_full_screenshot('file.png')

Solution

1. Step 1: Identify the correct method for full page screenshot in Firefox

   Firefox does not have a built-in method named save_full_page_screenshot. The standard method to save a screenshot is get_screenshot_as_file, which captures the visible viewport.

2. Step 2: Check other options for correctness

   driver.save_full_page_screenshot('file.png') is invalid as save_full_page_screenshot is not a standard Selenium method. driver.save_screenshot('file.png') saves visible viewport screenshot. driver.take_full_screenshot('file.png') is not a valid method.

3. Final Answer:

   driver.get_screenshot_as_file('file.png') -> Option A

4. Quick Check:

   Standard screenshot method = get_screenshot_as_file [OK]

Hint: Use get_screenshot_as_file to save screenshot [OK]

Common Mistakes:

• Using non-existent save_full_page_screenshot method
• Confusing save_screenshot with full page capture
• Trying invalid methods like take_full_screenshot

3. Given this code snippet, what will be the result?

driver.get('https://example.com')
driver.save_full_page_screenshot('page.png')
print('Screenshot saved')

medium

A. Runtime error because get_full_page_screenshot_as_file is unsupported

B. Screenshot saved and full page screenshot saved as 'page.png'

C. Only visible part screenshot saved as 'page.png'

D. SyntaxError due to incorrect method name

Solution

1. Step 1: Analyze the method usage

   The method save_full_page_screenshot is not a valid Selenium WebDriver method and will cause a SyntaxError or AttributeError.

2. Step 2: Check the print statement

   The print statement will not execute because the previous line causes an error.

3. Final Answer:

   SyntaxError due to incorrect method name -> Option D

4. Quick Check:

   Invalid method call causes error [OK]

Hint: Invalid method names cause errors [OK]

Common Mistakes:

• Assuming method is supported causing success
• Confusing full page with visible screenshot
• Thinking method name is correct syntax

4. You wrote this code but get a blank screenshot file:

driver.get('https://example.com')
driver.save_screenshot('screen.png')

What is the likely cause?

medium

A. Page did not fully load before screenshot

B. save_screenshot does not save files

C. Method get_full_page_screenshot_as_file is required instead

D. Screenshot file path is invalid

Solution

1. Step 1: Understand why screenshot is blank

   If the page is not fully loaded, the screenshot may capture a blank or incomplete page.

2. Step 2: Evaluate other options

   save_screenshot does save files. Method get_full_page_screenshot_as_file is unrelated to blank screenshot issue. Invalid file path would cause an error, not a blank file.

3. Final Answer:

   Page did not fully load before screenshot -> Option A

4. Quick Check:

   Wait for page load before screenshot [OK]

Hint: Always wait for page load before screenshot [OK]

Common Mistakes:

• Assuming save_screenshot never saves files
• Confusing full page screenshot with blank image issue
• Ignoring page load timing problems

5. How can you ensure a clean full page screenshot in headless Firefox using Selenium Python?

hard

A. Use save_screenshot immediately after driver.get() without waits

B. Scroll manually and take multiple viewport screenshots

C. Use headless mode, wait for page load, then call save_full_page_screenshot

D. Use driver.execute_script to hide elements before screenshot

Solution

1. Step 1: Understand headless mode limitations

   Headless Firefox does not support a built-in full page screenshot method.

2. Step 2: Use manual scrolling and multiple viewport screenshots

   To capture the full page, scroll manually and stitch multiple viewport screenshots.

3. Final Answer:

   Scroll manually and take multiple viewport screenshots -> Option B

4. Quick Check:

   Manual scroll + multiple screenshots = full page capture [OK]

Hint: Manual scrolling needed for full page in headless Firefox [OK]

Common Mistakes:

• Assuming save_full_page_screenshot exists in headless mode
• Taking screenshot immediately without waiting
• Hiding elements unnecessarily before capture