How Can I Efficiently Locate Web Elements with Multiple Class Names Using Selenium and Python?

Finding Elements by Class Name Using Selenium and Python

In web scraping scenarios, it's often necessary to locate elements on a web page dynamically. To overcome the limitations of BeautifulSoup in handling dynamic content, Selenium can be integrated to enable waiting for elements to load via JavaScript before scraping.

Consider the following Python code:

element = WebDriverWait(driver, 100).until(EC.presence_of_element_located((By.class, "ng-binding ng-scope")))

In this line of code, the intention is to specify a class name for element identification. However, an error can occur due to the presence of multiple class names within the By.class argument. Selenium does not support passing multiple class names through By.class.

Solution

To address this issue, consider the following suggestions:

• Instead of presence_of_element_located(), use either visibility_of_element_located() or element_to_be_clickable() for more precise element interaction.
• Combine the ID and CLASS attributes for element identification using the following techniques:

CSS_SELECTOR:

element = WebDriverWait(driver, 20).until(EC.visibility_of_element_located((By.CSS_SELECTOR, ".ng-binding.ng-scope#tabla_evolucion")))

XPATH:

element = WebDriverWait(driver, 20).until(EC.visibility_of_element_located((By.XPATH, "//*[@class='ng-binding ng-scope' and @id='tabla_evolucion']")))

By incorporating these modifications, you can effectively locate elements on web pages that load dynamically through JavaScript, enabling successful web scraping.

The above is the detailed content of How Can I Efficiently Locate Web Elements with Multiple Class Names Using Selenium and Python?. For more information, please follow other related articles on the PHP Chinese website!