Find element by class name in Selenium Python - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to find an element by its class name.

Selenium Python

element = driver.find_element_by_[1]("button-primary")

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

Aname

Bid

Ctag_name

Dclass_name

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'id' instead of 'class_name' when searching by class.

Using 'tag_name' which looks for HTML tags, not classes.

The method find_element_by_class_name is used to locate an element by its class attribute.

2fill in blank

medium

Complete the code to find all elements with the class name 'item'.

Selenium Python

elements = driver.find_elements_by_[1]("item")

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

Aclass_name

Bid

Ccss_selector

Dname

Attempts:

3 left

💡 Hint

Common Mistakes

Using find_element_by_class_name which returns only one element.

Using 'css_selector' without proper syntax.

The method find_elements_by_class_name returns a list of all elements with the given class.

3fill in blank

hard

Fix the error in the code to correctly find an element by class name.

Selenium Python

element = driver.find_element_by_[1]("btn-primary")

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

Aclass_name

Bclassname

CclassName

Dclass

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'classname' without underscore.

Using camelCase like 'className'.

The correct method name uses an underscore: class_name. Other variations cause errors.

4fill in blank

hard

Fill both blanks to find all elements with class 'active' and click the first one.

Selenium Python

elements = driver.find_elements_by_[1]("active")
elements[[2]].click()

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

Aclass_name

Bid

C0

D1

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'id' instead of 'class_name'.

Using index 1 instead of 0 for the first element.

Use class_name to find elements by class. The first element in a list is at index 0.

5fill in blank

hard

Fill all three blanks to find an element by class name, get its text, and assert it equals 'Submit'.

Selenium Python

element = driver.find_element_by_[1]("submit-btn")
text = element.[2]
assert text [3] "Submit"

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

Aclass_name

Btext

C==

Dclick

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'click' instead of 'text' to get the element's text.

Using '=' instead of '==' in the assertion.

Use class_name to find the element. The text property gets the visible text. Use == to check equality in the assertion.

Practice

1. What does the Selenium method find_element(By.CLASS_NAME, "example") do?

easy

A. Finds elements by their ID "example".

B. Finds all elements with the class name "example" on the webpage.

C. Finds elements by their tag name "example".

D. Finds the first element with the class name "example" on the webpage.

Solution

1. Step 1: Understand the method purpose

   The method find_element locates a single element on the page.

2. Step 2: Identify the locator type

   Using By.CLASS_NAME means it looks for the first element with the given class name.

3. Final Answer:

   Finds the first element with the class name "example" on the webpage. -> Option D

4. Quick Check:

   find_element + CLASS_NAME = first matching element [OK]

Hint: find_element with CLASS_NAME finds only the first matching element [OK]

Common Mistakes:

• Confusing find_element with find_elements (plural)
• Using class name but expecting multiple elements
• Mixing class name with ID or tag name locators

2. Which of the following is the correct syntax to find an element by class name "btn-primary" using Selenium in Python?

easy

A. driver.find_element(By.CLASS_NAME, "btn-primary")

B. driver.find_element_by_class_name("btn-primary")

C. driver.find_element(By.CLASS, "btn-primary")

D. driver.find_element(By.CLASSNAME, "btn-primary")

Solution

1. Step 1: Recall the correct Selenium syntax

   In Selenium Python 4+, the recommended syntax is find_element(By.CLASS_NAME, "class").

2. Step 2: Check each option for correctness

   driver.find_element(By.CLASS_NAME, "btn-primary") uses the correct locator By.CLASS_NAME and method find_element. Others use deprecated or incorrect locators.

3. Final Answer:

   driver.find_element(By.CLASS_NAME, "btn-primary") -> Option A

4. Quick Check:

   Use By.CLASS_NAME with find_element [OK]

Hint: Use By.CLASS_NAME with find_element, not old deprecated methods [OK]

Common Mistakes:

• Using deprecated find_element_by_class_name method
• Wrong locator names like CLASS or CLASSNAME
• Missing quotes around class name string

3. Given the HTML snippet:

<div class="alert success">Success!</div>
<div class="alert error">Error!</div>

What text will this Selenium Python code print?

element = driver.find_element(By.CLASS_NAME, "alert")
print(element.text)

medium

A. "Success!"

B. "Error!"

C. "Success! Error!"

D. Throws NoSuchElementException

Solution

1. Step 1: Understand find_element behavior

   It finds the first element matching the class name "alert" in the HTML order.

2. Step 2: Identify the first matching element

   The first <div> with class "alert success" contains text "Success!".

3. Final Answer:

   "Success!" -> Option A

4. Quick Check:

   find_element returns first matching element's text [OK]

Hint: find_element returns first match only, so text is from first element [OK]

Common Mistakes:

• Assuming it returns all matching elements' text
• Confusing class names with multiple classes
• Expecting an error if multiple classes exist

4. What is wrong with this Selenium Python code snippet?

element = driver.find_element(By.CLASS_NAME, ".button")

medium

A. find_element should be find_elements to find class

B. Class name should not include the dot prefix "."

C. By.CLASS_NAME is not a valid locator

D. The class name must be uppercase

Solution

1. Step 1: Check the class name format

   When using By.CLASS_NAME, the class name should be given without any CSS selector symbols like ".".

2. Step 2: Identify the error in the code

   The code incorrectly includes a dot prefix ".button" which causes a failure to find the element.

3. Final Answer:

   Class name should not include the dot prefix "." -> Option B

4. Quick Check:

   Class name locator needs plain class name, no dot [OK]

Hint: Remove dot prefix when using By.CLASS_NAME locator [OK]

Common Mistakes:

• Adding dot prefix like CSS selectors to class name
• Using find_elements when only one element is needed
• Assuming class names must be uppercase

5. You want to click the first button with class "submit-btn" on a page. Which code snippet correctly finds and clicks it using Selenium Python?

hard

A. button = driver.find_elements(By.CLASS_NAME, "submit-btn")
button.click()

B. button = driver.find_element(By.ID, "submit-btn")
button.click()

C. button = driver.find_element(By.CLASS_NAME, "submit-btn")
button.click()

D. button = driver.find_element(By.CLASS_NAME, ".submit-btn")
button.click()

Solution

1. Step 1: Choose correct method to find single element by class

   Use find_element(By.CLASS_NAME, "submit-btn") to get the first matching element.

2. Step 2: Call click() on the found element

   After locating the element, call click() to perform the click action.

3. Final Answer:

   button = driver.find_element(By.CLASS_NAME, "submit-btn")\nbutton.click() -> Option C

4. Quick Check:

   find_element + CLASS_NAME + click() = correct usage [OK]

Hint: Use find_element with class name, then call click() on it [OK]

Common Mistakes:

• Using find_elements returns list, cannot call click() directly
• Using ID locator instead of class name
• Including dot prefix in class name