Selenium vs Playwright vs pytest | Python Test Automation Tools Compared

📌 This article is for:

• Engineers unsure whether to use Selenium or Playwright
• Developers wondering how pytest differs from browser automation tools
• QA engineers and developers starting test automation with Python
• Team leads who want a clear rationale for their tool choice

✅ What you’ll learn in this article

• The characteristics and strengths of Selenium, Playwright, and pytest
• A side-by-side comparison of all three tools
• Which tool to use in which situation
• The most common tool combinations used in real projects

👤

📌 The Bottom Line

Selenium wins on browser compatibility and a massive knowledge base. Playwright is modern, fast, and feature-rich. pytest is the test management foundation — not a browser tool. In practice, “pytest + Selenium” or “pytest + Playwright” is the standard combination.

💡 Important: pytest doesn’t compete with Selenium or Playwright. The standard setup is to use pytest as the test management layer, with Selenium or Playwright handling browser automation on top of it.

• The industry standard for browser automation since 2004 — unmatched in track record and available resources
• Excellent cross-browser support: Chrome, Firefox, Safari, Edge, and more
• Multi-language support (Python, Java, JavaScript, C#) makes it easy to adopt in existing projects

from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC

driver = webdriver.Chrome()
driver.get("https://example.com/login")

# Wait for element, then interact
wait = WebDriverWait(driver, 10)
email = wait.until(EC.presence_of_element_located((By.ID, "email")))
email.send_keys("test@example.com")

driver.find_element(By.ID, "password").send_keys("password123")
driver.find_element(By.ID, "submit").click()

driver.quit()

💡 Real-world Tip: The key to stable Selenium tests is wait handling. Use WebDriverWait instead of time.sleep() — it waits for the element to actually be ready before interacting. This single change eliminates the majority of flaky test failures.

• A modern browser automation tool developed by Microsoft, released in 2020
• Auto-wait built in — no need to manually write wait logic for elements
• Screenshots, video recording, and trace viewer included out of the box — evidence collection is effortless

from playwright.sync_api import sync_playwright

with sync_playwright() as p:
    browser = p.chromium.launch()
    page = browser.new_page()
    page.goto("https://example.com/login")

    # Auto-wait: automatically waits for elements before interacting
    page.fill("#email", "test@example.com")
    page.fill("#password", "password123")
    page.click("#submit")

    # Screenshot in one line
    page.screenshot(path="login_result.png")

    browser.close()

💡 Real-world Tip: Playwright’s page.fill() and page.click() automatically wait for elements to be visible and ready. The “element not found” errors that plague Selenium tests drop dramatically. And page.screenshot() in one line makes evidence collection effortless.

• A framework for running and managing Python tests
• Used as the foundation for unit tests, API tests, and integration tests
• Can also manage E2E tests by combining with Selenium or Playwright

import pytest
import requests

# API test example
def test_get_user():
    response = requests.get("https://jsonplaceholder.typicode.com/users/1")
    assert response.status_code == 200
    assert response.json()["name"] == "Leanne Graham"

# Fixture: define shared setup logic
@pytest.fixture
def base_url():
    return "https://jsonplaceholder.typicode.com"

def test_post_created(base_url):
    response = requests.post(f"{base_url}/posts", json={"title": "test"})
    assert response.status_code == 201

💡 Real-world Tip: pytest’s fixture system is incredibly powerful. It lets you centralize setup and teardown logic — like launching a browser before tests and closing it after. Combined with Selenium, you can fully automate “open browser at test start, close automatically when done.”

🤔 Which should you pick?

Choose Selenium if…	You’re inheriting existing tests / Your team uses Java or C# / You need the deepest resource pool
Choose Playwright if…	You’re starting fresh / Your team uses Python or JS / Stability and speed are the priority

💡 On this blog: All sample code uses Python + Selenium or Playwright + pytest. The same stack is used in the GitHub portfolio — so you can reference real production-quality code directly.

📖 See each tool in action

• 【Selenium】How to Auto-Detect Broken Links with Python
• 【Selenium】Automate Login Form Validation Testing
• 【Playwright】E2E Test Automation with SauceDemo (Beginner’s Guide)

📋 Key Takeaways

• Selenium: long history, massive resources, excellent cross-browser support — requires manual wait logic
• Playwright: modern, fast, Auto-wait and recording built-in — best choice for new projects
• pytest: not a browser tool — it’s the test management and execution framework that Selenium and Playwright run inside
• The standard real-world combination is “pytest + Selenium” or “pytest + Playwright”
• For new Python projects, “pytest + Playwright” is the current best practice

“Which is better?” is less important than “just start using one.” Either tool will teach you the fundamentals of test automation — and you can always switch later.