Opening URLs (get) in Selenium Python - Deep Dive

Overview - Opening URLs (get)

What is it?

Opening URLs using Selenium means telling the browser to go to a specific web address. This is done with the get() method, which loads the page you want to test. It is like typing a website address in the browser's address bar and pressing Enter. This step is the first action in many automated web tests.

Why it matters

Without opening URLs, automated tests cannot reach the web pages they need to check. Imagine trying to test a website without ever visiting it — you would have no way to see if it works. Opening URLs lets tests interact with real pages, making sure websites behave correctly for users.

Where it fits

Before learning to open URLs, you should know how to set up Selenium WebDriver and start a browser session. After mastering opening URLs, you will learn how to find elements on the page and interact with them, like clicking buttons or filling forms.

Mental Model

Core Idea

Opening a URL with get() tells the browser to load a specific web page so tests can interact with it.

Think of it like...

It's like entering an address into a GPS to reach a destination before exploring the area.

┌───────────────┐
│ Selenium Test │
└──────┬────────┘
       │ calls get(url)
       ▼
┌───────────────┐
│ Browser       │
│ loads the URL │
└───────────────┘

Build-Up - 6 Steps

1

Foundation

Starting a Browser Session

Concept: Learn how to open a browser window using Selenium WebDriver.

from selenium import webdriver # Create a new browser instance browser = webdriver.Chrome() # This opens a blank browser window ready for commands

Result

A new browser window opens, controlled by Selenium.

Understanding how to start the browser is essential because all further actions depend on this active session.

2

Foundation

Using get() to Open a URL

Concept: Use the get() method to load a web page by its URL.

browser.get('https://example.com') # This tells the browser to navigate to the specified web address

Result

The browser loads the page at https://example.com and displays it.

Knowing that get() triggers page loading helps you control where your test goes next.

3

Intermediate

Handling Page Load Timing

🤔Before reading on: Do you think get() waits for the page to fully load before moving on? Commit to your answer.

Concept: Understand how Selenium waits for pages to load after get() is called.

When you call get(), Selenium waits until the page's 'load' event fires, meaning the main HTML and resources are loaded. However, some dynamic content may still load later via JavaScript.

Result

Tests proceed only after the main page is loaded, but some elements might not be ready immediately.

Knowing what get() waits for helps you avoid errors when interacting with elements that load later.

4

Intermediate

Using get() with Different URL Types

🤔Before reading on: Can get() open local files or only web URLs? Commit to your answer.

Concept: Learn that get() can open both web URLs and local file paths using the file:// protocol.

browser.get('file:///C:/path/to/localfile.html') # This opens a local HTML file in the browser browser.get('https://example.com') # This opens a web page online

Result

The browser loads the specified local file or web page depending on the URL format.

Understanding URL formats expands your testing to local files and offline scenarios.

5

Advanced

Managing Redirects with get()

🤔Before reading on: Does get() automatically follow HTTP redirects? Commit to your answer.

Concept: Selenium's get() follows HTTP redirects automatically, loading the final destination page.

If a URL redirects (like from http to https), get() waits and loads the redirected page. Example: browser.get('http://github.com') # Redirects to https://github.com automatically

Result

The browser ends up on the final redirected page without extra code.

Knowing redirects are handled automatically prevents confusion when URLs change during tests.

6

Expert

Avoiding Common get() Pitfalls in Tests

🤔Before reading on: Can calling get() multiple times cause issues in tests? Commit to your answer.

Concept: Repeated or improper use of get() can cause flaky tests due to timing or session state issues.

Calling get() resets the page and session state. If tests rely on previous page data or cookies, calling get() again can break them. Example mistake: browser.get('https://example.com') # do something browser.get('https://example.com') # resets state unexpectedly Better approach: Use navigation commands carefully and manage session state explicitly.

Result

Tests become more stable and predictable by controlling when and how get() is used.

Understanding get() resets state helps prevent subtle bugs and flaky tests in complex scenarios.

Under the Hood

When get() is called, Selenium sends a command to the browser driver to navigate to the URL. The browser then processes the URL, sends HTTP requests, and loads the page content. Selenium waits until the browser signals that the page load event is complete before continuing. Internally, this involves browser protocols like WebDriver and HTTP communication.

Why designed this way?

Selenium was designed to mimic real user behavior by controlling browsers through standard protocols. The get() method abstracts complex browser navigation into a simple command, making tests easier to write and maintain. Automatic waiting for page load ensures tests don't run too early, reducing timing errors.

┌───────────────┐      send get(url) command      ┌───────────────┐
│ Selenium Test │───────────────────────────────▶│ Browser Driver│
└──────┬────────┘                                └──────┬────────┘
       │                                                │
       │                                                │
       │                                navigate to URL │
       │◀──────────────────────────────────────────────┤
       │          page load event complete signal       │
       ▼                                                ▼
┌───────────────┐                                ┌───────────────┐
│ Test continues│                                │ Web Page Load │
└───────────────┘                                └───────────────┘

Myth Busters - 4 Common Misconceptions

Quick: Does get() wait for all page elements including images and scripts to load before continuing? Commit to yes or no.

Common Belief: get() waits for every element on the page, including images and scripts, to fully load before moving on.

Reality: get() waits for the browser's load event, which means the main HTML and synchronous resources are loaded, but some asynchronous scripts or images may still load afterward.

Why it matters: Assuming full load can cause tests to fail when they try to interact with elements that are not yet ready.

Quick: Can get() open URLs in new tabs or windows automatically? Commit to yes or no.

Common Belief: get() can open URLs in new tabs or windows by default.

Reality: get() always loads the URL in the current browser window or tab controlled by Selenium. Opening new tabs requires separate commands.

Why it matters: Misunderstanding this leads to tests that expect new tabs but fail because the URL loads in the same tab.

Quick: Does calling get() clear cookies and session data automatically? Commit to yes or no.

Common Belief: Each get() call resets cookies and session data to start fresh.

Reality: get() does not clear cookies or session data; the browser session remains unless explicitly cleared.

Why it matters: Tests relying on persistent login or session data can break if testers mistakenly clear sessions unnecessarily.

Quick: Can get() be used to open non-HTTP URLs like FTP or mailto? Commit to yes or no.

Common Belief: get() can open any URL scheme like FTP or mailto links.

Reality: get() works best with HTTP, HTTPS, and file URLs. Other schemes may not be supported or behave unexpectedly.

Why it matters: Trying unsupported URLs can cause test failures or browser errors.

Expert Zone

1

Some browsers handle page load events differently, so get() waiting behavior can vary subtly across browsers.

2

Using get() repeatedly without managing cookies or local storage can cause state-related test flakiness.

3

Combining get() with explicit waits for specific elements improves test reliability beyond relying on page load alone.

When NOT to use

Avoid using get() when you want to simulate user navigation like clicking links or buttons; use click() or navigation commands instead. For testing single-page applications, get() may not trigger all dynamic content loads, so use waits and JavaScript execution.

Production Patterns

In real-world tests, get() is used at the start of test cases to load the initial page. Tests often combine get() with waits for key elements to ensure the page is ready. Some frameworks wrap get() calls with retry logic to handle intermittent network issues.

Connections

HTTP Protocol

builds-on

Understanding how get() triggers HTTP requests helps grasp how browsers load pages and how tests interact with web servers.

Explicit Waits in Selenium

complements

Knowing that get() waits only for page load events shows why explicit waits are needed to handle dynamic content reliably.

GPS Navigation Systems

similar pattern

Both get() and GPS navigation start by setting a destination before proceeding with detailed steps, illustrating the importance of initial direction.

Common Pitfalls

#1 Trying to interact with page elements immediately after get() without waiting.

Wrong approach:

browser.get('https://example.com')
element = browser.find_element('id', 'dynamic')
element.click()

Correct approach:

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

browser.get('https://example.com')
wait = WebDriverWait(browser, 10)
element = wait.until(EC.element_to_be_clickable((By.ID, 'dynamic')))
element.click()

Root cause:

Misunderstanding that get() does not guarantee all elements are ready immediately after page load.

#2 Calling get() multiple times unnecessarily, causing test state loss.

Wrong approach:

browser.get('https://example.com')
# do some actions
browser.get('https://example.com') # reloads and resets state

Correct approach:

browser.get('https://example.com')
# do all needed actions on this page without reloading unless necessary

Root cause:

Not realizing that get() reloads the page and resets the DOM and session state.

#3 Using get() with unsupported URL schemes like mailto.

Wrong approach:

browser.get('mailto:[e-mail]')

Correct approach:

# Instead, simulate clicking a mailto link or handle outside Selenium
# Selenium does not support mailto URLs directly

Root cause:

Assuming get() can open any URL without restrictions.

Key Takeaways

The get() method is how Selenium tells the browser to load a specific web page for testing.

get() waits for the main page load event but not necessarily for all dynamic content to finish loading.

Understanding what get() does and does not wait for helps write more reliable tests with proper waits.

Repeated use of get() resets the page and can clear the current state, so use it carefully.

Combining get() with waits and proper session management is key to stable, real-world automated tests.