Python environment setup 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

Cwebdriver

Dselenium

Attempts:

3 left

💡 Hint

Common Mistakes

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

Trying to import 'selenium' directly does not give access to WebDriver.

The correct import to use Selenium WebDriver is webdriver. This module allows controlling 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

BFirefox

CSafari

DEdge

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'Firefox' when intending to launch Chrome.

Misspelling the browser name causes runtime errors.

To launch Chrome browser, use webdriver.Chrome(). This creates a Chrome WebDriver instance.

3fill in blank

hard

Fix the error in the code to open a webpage with Selenium.

Selenium Python

driver.get([1])

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

A'https://example.com'

Bhttps://example.com

C'example.com'

Dexample.com

Attempts:

3 left

💡 Hint

Common Mistakes

Omitting quotes causes syntax errors.

Leaving out the protocol (https://) may cause navigation errors.

The URL must be a string enclosed in quotes. So 'https://example.com' is correct.

4fill in blank

hard

Fill both blanks to wait 5 seconds before closing the browser.

Selenium Python

import time

time.[1](5)
driver.[2]()

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

Asleep

Bwait

Cclose

Dquit

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'wait' instead of 'sleep' causes attribute errors.

Using 'close()' only closes one tab, not the whole browser.

time.sleep(5) pauses execution for 5 seconds.
driver.quit() closes all browser windows and ends the session.

5fill in blank

hard

Fill all three blanks to find an element by its ID and click it.

Selenium Python

from selenium.webdriver.common.by import [1]
element = driver.find_element([2], [3])
element.click()

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

ABy

BBy.ID

C'submit-button'

D'submit'

Attempts:

3 left

💡 Hint

Common Mistakes

Using the string 'By.ID' instead of the enum By.ID.

Providing wrong or incomplete ID strings.

Import By to specify locator types.
Use By.ID to find element by ID.
Provide the exact ID string, e.g. 'submit-button'.

Practice

1. What is the main purpose of creating a Python virtual environment before running Selenium tests?

easy

A. To speed up the browser during tests

B. To isolate project dependencies and avoid conflicts

C. To automatically write test scripts

D. To increase the screen resolution for testing

Solution

1. Step 1: Understand virtual environment purpose

   A virtual environment keeps project packages separate from global Python packages.

2. Step 2: Relate to Selenium testing

   This isolation prevents conflicts between different projects' dependencies, ensuring stable tests.

3. Final Answer:

   To isolate project dependencies and avoid conflicts -> Option B

4. Quick Check:

   Virtual environment = isolate dependencies [OK]

Hint: Virtual env keeps packages separate to avoid conflicts [OK]

Common Mistakes:

• Thinking virtual env speeds up browser
• Assuming it writes test scripts automatically
• Believing it changes screen resolution

2. Which command correctly activates a Python virtual environment named venv on Windows?

easy

A. activate venv

B. source venv/bin/activate

C. venv\Scripts\activate

D. python -m venv activate

Solution

1. Step 1: Identify Windows activation command

   On Windows, virtual environments activate with venv\Scripts\activate.

2. Step 2: Compare other options

   source venv/bin/activate is for Unix/Linux; others are incorrect syntax.

3. Final Answer:

   venv\Scripts\activate -> Option C

4. Quick Check:

   Windows activate = venv\Scripts\activate [OK]

Hint: Windows uses backslash path for activate script [OK]

Common Mistakes:

• Using Unix command on Windows
• Typing activate without path
• Confusing venv creation with activation

3. Given this code snippet run inside an activated virtual environment:

import selenium
print(selenium.__version__)

What will happen if Selenium is not installed in this environment?

medium

A. It raises a ModuleNotFoundError

B. It prints the Selenium version number

C. It prints 'None' and continues

D. It installs Selenium automatically

Solution

1. Step 1: Understand import behavior

   If a module is not installed, Python raises ModuleNotFoundError on import.

2. Step 2: Check code effect

   Since Selenium is missing, import selenium fails with error, no print occurs.

3. Final Answer:

   It raises a ModuleNotFoundError -> Option A

4. Quick Check:

   Missing module import = ModuleNotFoundError [OK]

Hint: Missing module import causes ModuleNotFoundError [OK]

Common Mistakes:

• Expecting automatic install
• Thinking it prints None
• Assuming version prints without error

4. You tried to activate your virtual environment on Linux using venv\Scripts\activate but got an error. What is the likely problem?

medium

A. Python not installed

B. Virtual environment not created

C. Selenium not installed

D. Using Windows path on Linux

Solution

1. Step 1: Identify path style mismatch

   Linux uses forward slashes and venv/bin/activate, not Windows backslashes.

2. Step 2: Understand error cause

   Using Windows path on Linux causes 'file not found' error when activating.

3. Final Answer:

   Using Windows path on Linux -> Option D

4. Quick Check:

   Linux activate path uses forward slashes [OK]

Hint: Linux uses forward slashes, not Windows backslashes [OK]

Common Mistakes:

• Assuming virtual env not created
• Blaming Python installation
• Confusing Selenium install with activation

5. You want to run Selenium tests in a new project. Which sequence of commands correctly sets up your Python environment and installs Selenium?

hard

A. python -m venv env; source env/bin/activate; pip install selenium

B. pip install selenium; python -m venv env; source env/bin/activate

C. source env/bin/activate; python -m venv env; pip install selenium

D. pip install selenium; source env/bin/activate; python -m venv env

Solution

1. Step 1: Create virtual environment first

   Use python -m venv env to create isolated environment.

2. Step 2: Activate environment before installing packages

   Activate with source env/bin/activate so pip installs inside it.

3. Step 3: Install Selenium inside activated environment

   Run pip install selenium to add Selenium only to this project.

4. Final Answer:

   python -m venv env; source env/bin/activate; pip install selenium -> Option A

5. Quick Check:

   Create, activate, then install Selenium [OK]

Hint: Create env, activate it, then install Selenium [OK]

Common Mistakes:

• Installing Selenium before activating env
• Activating before creating env
• Skipping environment creation