Aug 22, 2020 Sample code to get all links present on a webpage using Selenium WebDriver with Java. At times during automation, we are required to fetch all the links present on a webpage. Also, this is one of the most frequent requirements of web-scrapping. Primarily, it is for automating web applications for testing purposes, but is certainly not limited to just that. Boring web-based administration tasks can (and should!) also be automated as well. Some good guy has written a.net wrapper for selenium which can be used in VBA and VB.net and that is the wrapper we are going to use in this tutorial. Most popular libraries or frameworks that are used in Python for Web – Scrapping are BeautifulSoup, Scrappy & Selenium. In this article, we’ll talk about Web-scrapping using Selenium in Python. And the cherry on top we’ll see how can we gather images from the web that you can use to build train data for your deep learning project. Using Selenium v3.x opening a website in a New Tab through Python is much easier now. We have to induce an WebDriverWait for numberofwindowstobe(2) and then collect the window handles every time we open a new tab/window and finally iterate through the window handles and switchTo.window(newlyopened) as required.
Imagine what would you do if you could automate all the repetitive and boring activities you perform using internet, like checking every day the first results of Google for a given keyword, or download a bunch of files from different websites.
In this post you’ll learn to use Selenium with Python, a Web Scraping tool that simulates a user surfing the Internet. For example, you can use it to automatically look for Google queries and read the results, log in to your social accounts, simulate a user to test your web application, and anything you find in your daily live that it’s repetitive. The possibilities are infinite! 🙂
*All the code in this post has been tested with Python 2.7 and Python 3.4.
Install and use Selenium
Selenium is a python package that can be installed via pip. I recommend that you install it in a virtual environment (using virtualenv and virtualenvwrapper).
To install selenium, you just need to type:
In this post we are going to initialize a Firefox driver — you can install it by visiting their website. However, if you want to work with Chrome or IE, you can find more information here.
Once you have Selenium and Firefox installed, create a python file, selenium_script.py. We are going to initialize a browser using Selenium:
2 4 6 8 10 12 14 16 18 | from selenium.common.exceptions import ElementNotVisibleException def lookup(driver,query): try: box=driver.wait.until(EC.presence_of_element_located( button=driver.wait.until(EC.element_to_be_clickable( box.send_keys(query) button.click() button=driver.wait.until(EC.visibility_of_element_located( button.click() print('Box or Button not found in google.com') |
- the element that raised the exception, button.click() is inside a try statement.
- if the exception is raised, we look for the second button, using visibility_of_element_located to make sure the element is visible, and then click this button.
- if at any time, some element is not found within the 5 second period, the TimeoutException is raised and caught by the two end lines of code.
- Note that the initial button name is “btnK” and the new one is “btnG”.
Method list in Selenium
To sum up, I’ve created a table with the main methods used here.
Note: it’s not a python file — don’t try to run/import it 🙂