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Practice

Basic Selenium Methods and Usage

In this lesson, we will explore some key methods that are frequently used in Selenium.


Opening a Web Page with get​

In Selenium, the get method is the most basic method to navigate to a specific URL.

It performs the same action as entering a URL in the browser's address bar and pressing enter.

Example of Opening a Web Page
from selenium import webdriver

# Create Chrome WebDriver
driver = webdriver.Chrome()

# Navigate to a specific URL
driver.get("https://www.example.com")

# Print the page title
print(driver.title)

Finding a Specific Element with find_element​

To find a specific HTML element on a web page, we use the find_element method.

For example, you can use an HTML element's ID, class name, HTML tag name, XPath, etc., to find a specific HTML element.

Note: XPath is a language used to select elements or attributes using a specific path expression. For instance, //h1 selects all h1 elements in the page, and //button[@id='exampleId'] finds the button element with the ID exampleId.


Example of Finding a Web Element
# Finding an element by ID
# find_element("id", "element ID")
element = driver.find_element("id", "exampleId")

# Finding an element by class name
# find_element("class name", "class name")
element = driver.find_element("class name", "exampleClass")

# Finding an element by HTML tag name
# find_element("tag name", "HTML tag name")
element = driver.find_element("tag name", "button")

# Finding an element by XPath
# find_element("xpath", "XPath expression")
element = driver.find_element("xpath", "//button[@id='exampleId']")

Using the By class provided by Selenium allows you to find elements more concisely.

Example of Finding an Element Using the By Class
from selenium.webdriver.common.by import By

# Finding an element by ID
element = driver.find_element(By.ID, "exampleId")

# Finding an element by class name
element = driver.find_element(By.CLASS_NAME, "exampleClass")

# Finding an element by tag name
element = driver.find_element(By.TAG_NAME, "button")

# Finding an element by XPath
element = driver.find_element(By.XPATH, "//button[@id='exampleId']")

To extract text from the selected element, use the text attribute.

Example of Extracting Text from an Element
# Extract text from the element
element_text = element.text

# Print the extracted text
print(element_text)

Clicking an HTML Element with click​

To click a specific HTML element on a web page, use the click method.

Example of Clicking a Button
# Click the found element
element.click()

For instance, you can use Selenium to automatically click a login button or follow a specific link.


Entering Text with send_keys​

To automatically enter text into an input field, use the send_keys method.

This method inputs text as if the user is typing on the keyboard.

Example of Entering Text
# Enter text into the input field
element.send_keys("Hello, World!")

This is very useful for automating tasks like entering a username and password into a login form.


Closing the Web Page​

Closing the Browser with quit​

If you want to close the browser after completing all tasks, use the quit method.

The quit method closes all open browser windows and ends the WebDriver session.

Example of Closing the Browser
# Close the browser
driver.quit()

This helps prevent memory leaks (the phenomenon where unnecessary data remains in memory) and allows you to close the browser cleanly.

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