Python with Selenium is one of the most in-demand automation testing skill sets today. Its simple syntax, powerful libraries, and compatibility with modern test frameworks make it a favorite among QA engineers and automation testers.
This blog covers the Top 25 Python with Selenium interview questions and answers, ranging from basic concepts to advanced real-world scenarios, helping you confidently crack interviews.
Selenium is an open-source automation testing tool used to automate web browsers. Python is often used with Selenium because:
Selenium consists of:
Selenium WebDriver is a browser automation framework that directly interacts with browsers using native browser drivers (like ChromeDriver or GeckoDriver) without using a proxy server.
Answer:
You can install Selenium using pip:
pip install selenium
You also need to download the appropriate browser driver (ChromeDriver, EdgeDriver, etc.) and add it to the system PATH.
from selenium import webdriver
driver = webdriver.Chrome()
driver.get("https://www.google.com")
Locators are used to identify web elements on a webpage. Common locators include:
XPath is a language used to locate elements in an XML/HTML document.
It is useful when elements don’t have unique IDs or names.
Example:
driver.find_element(By.XPATH, "//input[@name='q']")
| Absolute XPath | Relative XPath |
|---|---|
| Starts from root (/) | Starts from any node (//) |
| Brittle | More flexible |
| Longer | Shorter & efficient |
CSS Selector is a pattern used to select elements based on CSS rules.
It is faster than XPath in most browsers.
Example:
driver.find_element(By.CSS_SELECTOR, "input[name='q']")
Implicit Wait
Applies globally
Waits for elements before throwing exception
driver.implicitly_wait(10)
Explicit Wait
Waits for a specific condition
WebDriverWait(driver, 10).until(
EC.presence_of_element_located((By.ID, "username"))
)
POM is a design pattern where:
from selenium.webdriver.support.ui import Select
dropdown = Select(driver.find_element(By.ID, "country"))
dropdown.select_by_visible_text("India")
alert = driver.switch_to.alert
alert.accept()
Other methods:
dismiss()send_keys()driver.switch_to.frame("frameName")
driver.switch_to.default_content()
handles = driver.window_handles
driver.switch_to.window(handles[1])
Common exceptions include:
from selenium.webdriver import ActionChains
actions = ActionChains(driver)
actions.move_to_element(element).click().perform()
driver.save_screenshot("error.png")
driver.find_element(By.ID, "upload").send_keys("C:/test/file.txt")
PyTest is a Python testing framework used for:
It enhances Selenium test scalability and structure.
Fixtures are used to set up and tear down test environments.
@pytest.fixture
def setup():
driver = webdriver.Chrome()
yield driver
driver.quit()
A test automation framework is a structured approach combining:
Examples:
Using openpyxl or pandas library to read test data and perform data-driven testing.
| find_element | find_elements |
|---|---|
| Returns single element | Returns list of elements |
| Throws exception | Returns empty list |
Python with Selenium continues to dominate the automation testing landscape due to its simplicity, flexibility, and strong ecosystem. Mastering these top 25 interview questions will not only help you crack interviews but also build a strong foundation for real-world automation projects.
If you're a fresher or career switcher, focusing on hands-on practice + framework design is the key to success.