Selenium installation (pip install selenium) in Selenium Python - Practice Problems & Coding Challenges

Challenge - 5 Problems

🧠 Conceptual

intermediate

Understanding Selenium Installation

What is the correct command to install Selenium for Python using pip?

A pip install selenium

B pip install selenium-python

C pip install selenium3

D pip install selenium-webdriver

💡 Hint

Think about the official package name on PyPI for Selenium.

The official Selenium package for Python is installed using pip install selenium. Other options are incorrect package names.

❓ Predict Output

intermediate

Check Selenium Version After Installation

What will be the output of the following code snippet after installing Selenium?

Selenium Python

import selenium
print(selenium.__version__)

A Raises AttributeError

B Raises ModuleNotFoundError

C Prints 'selenium'

D Prints the installed Selenium version, e.g., '4.10.0'

💡 Hint

After successful installation, the selenium module has a __version__ attribute.

Once Selenium is installed, importing it and printing selenium.__version__ outputs the version string like '4.10.0'. If not installed, it raises ModuleNotFoundError.

🔧 Debug

advanced

Identify the Error When Selenium is Not Installed

What error will occur if you run this code without installing Selenium?

Selenium Python

from selenium import webdriver
browser = webdriver.Chrome()

A NameError: name 'webdriver' is not defined

B ModuleNotFoundError: No module named 'selenium'

C AttributeError: module 'selenium' has no attribute 'webdriver'

D ImportError: cannot import name 'webdriver'

💡 Hint

Think about what happens when Python cannot find the selenium package.

If Selenium is not installed, Python raises ModuleNotFoundError when trying to import it.

❓ assertion

advanced

Validating Selenium Installation in a Test Script

Which assertion correctly checks that Selenium is installed by verifying the version string is not empty?

Selenium Python

import selenium
version = selenium.__version__

A assert version == None

B assert version > 0

C assert isinstance(version, str) and len(version) > 0

D assert selenium.version != ''

💡 Hint

Check that the version is a non-empty string.

The version attribute is a string. The assertion verifies it is a string and not empty. Other options are incorrect types or attributes.

❓ framework

expert

Automating Selenium Installation Check in CI Pipeline

Which script snippet best ensures Selenium is installed before running tests in a CI pipeline?

A

try:
    import selenium
except ModuleNotFoundError:
    import subprocess
    subprocess.check_call(['pip', 'install', 'selenium'])

B

import selenium
print('Selenium installed')

C

pip install selenium
python -m unittest

D

if selenium not in sys.modules:
    pip install selenium

💡 Hint

Think about how to programmatically install a package if missing.

Option A tries to import Selenium and installs it if missing using subprocess. Option A assumes Selenium is installed. Option A is a shell command, not a script snippet. Option A is invalid syntax.