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If you ask a lazy programmer which is his favorite programming language, there is a high probability that you will get “Python” as an answer. Python is considered as one of the most popular and in-demand programming languages. As you all might be aware, Selenium is the perfect tool for Automation Testing of a web application. Hence, Python helps us to write the Selenium scripts in a much simpler way when compared to other programming languages. So I bring up this article on Selenium using Python in which I will be covering the below-mentioned topics:
If you want to master the concepts of Selenium by Certified Selenium Expert, you can check out the below video where these topics are covered on a broader gauge.
This video will give you a comprehensive knowledge on Selenium fundamentals for Python.
Selenium is an open source tool which is used for automating the test cases carried out on web browsers or the web applications that are being tested using any web browser. Wait, before you get carried away, let me re-iterate that, only testing of web applications is possible with Selenium. We can neither test any desktop software application nor test any mobile application using Selenium. So it’s an open source tool which supports cross browsing and automates web applications!
Now moving ahead, let’s see why do we need Selenium IDE for Automation Testing?
As I have already mentioned – Selenium is open-source, and also there is no licensing cost involved, which is a major advantage over other testing tools. Other major reasons behind Selenium’s ever-growing popularity include their test cases, OS platform, and browser support.
These are some of the reason that keeps Selenium at the top when compared to other automation tools. Now let’s dive deeper into this article and understand what is Python?
Python is very simple and easy to learn. It is one of the most powerful languages and closely resembles the English language!
So, what contributes to its simplicity? Python is
Python also has many built-in testing frameworks that cover debugging & fastest workflows. A lot of tools and modules are available to make things easier such as Selenium and Splinter and Python also supports testing with cross-platform & cross-browser with frameworks such as PyTest and Robot Framework.
Having understood this, now let’s understand the binding between Selenium and Python.
The very first step is to write your functional tests using Selenium web driver, after that, you need to send a request to Selenium server and then test cases are executed on various browsers. It can be Google Chrome, Internet Explorer or Mozilla Firefox.
Now, in order to implement Python with Selenium, we first need to import Selenium web driver!
First, let me tell you what is Selenium web driver.
WebDriver in Selenium is a web-based Automation Testing framework which can test web pages initiated on various web browsers and various operating systems. In order to import and configure dependencies to add libraries and functionalities, you need to import Selenium Webdriver with the help of below commands.
from selenium import webdriver from selenium.webdriver.common.keys import keys from selenium.import.*
This is all about the binding between Python and Selenium. Now let’s move further and understand how to locate elements in Selenium using Python.
Python programming language offers various frameworks like Django, flask etc. You can customize it with themes and plugins & it also lets you to enhance productivity while coding by providing some features like suggestions, Local VCS etc. You can write Selenium scripts in Python using any of the tools like Jupyter Notebook, Anaconda, and PyCharm. Now let’s see what are locators in Selenium?
The locator is as an address that identifies a web element uniquely within the webpage. Locators are the HTML properties of a web element which tells Selenium about the element it needs to perform the action on. Selenium uses locators to interact with the web elements on the webpage.
Now, there is a diverse range of web elements like text box, id, radio button, etc and identifying these elements has always been a very tricky subject. Thus it requires an accurate and effective approach. Thereby, we can say that more effective the locator is, stabler will be the automation script. Every Selenium command requires locators to find web elements. Thus, to identify these web elements accurately and precisely, we have different types of locators, namely:
If you wish to learn in detail regarding these locators, you can read this article on Locators in Selenium.
Now let’s see a small example to understand the working of locators in Selenium using Python.
I will launch Google Chrome and navigate to hotstar.com. Here, I will try to locate the search box using ID Locator.
On inspecting the above web element, you can see it has an input tag and attributes like class and id. Now, I will use the value of Id locator i.e. search-field to locate the search box.
Let’s see how to automate the search box and send values to it using Id locator.
from selenium import webdriver driver = webdriver.Chrome("C:UsersNeha_Vaidyaeclipse-workspaceSeleniumchromedriver_win32chromedriver.exe") driver.get("https://www.hotstar.com") driver.find_element_by_id("searchField").send_keys("Movies")
When you run the above code, chrome driver will launch Google Chrome, redirect to Hotstar, enter the value as ‘Movies’ in the search box.
Now suppose if you wish to Google Search an element automatically, let’s see how to do that with the help of name locator. Initially, I will inspect Google Search box and retrieve the value of name attribute i.e. ‘q’. Next step is to send values to the search box. Once you send the values to search, it will give you an automated search of Selenium. You can have a look at the below code for the same in Python.
from selenium import webdriver driver = webdriver.Chrome("C:UsersNeha_Vaidyaeclipse-workspaceSeleniumchromedriver_win32chromedriver.exe") driver.get("https://www.google.com") driver.find_element_by_name("q").send_keys("Selenium") driver.find_element_by_name("btnK").click()
So, basically, this is how it works. Now let’s have a look at the generalized code for locating elements using XPath.
from selenium import webdriver driver = webdriver.Chrome("C:UsersNeha_Vaidyaeclipse-workspaceSeleniumchromedriver_win32chromedriver.exe") driver.get("https://www.hotstar.com") driver.find_element_by_xpath("//div[@class='signIn displayElement']").click() # Click on login icon driver.find_element_by_xpath("//input[@name='email']").send_keys("firstname.lastname@example.org") # Entering email address driver.find_element_by_name("password").send_keys("edureka123") #Entering the given password driver.find_element_by_xpath("//button[@type='submit']").click() #Clicking submit button to login
The above code depicts the login for hotstar.com. First, using XPath I will click on the login icon, then enter email address and password. After that again using XPath I will click on submit button to login through hotstar.com. So every step of login procedure is carried out with the help of XPath locator. This is how it works. If you wish to learn XPath and its fundamentals in depth, you can read this article on XPath in Selenium.
With this, we come to an end of this article on Selenium using Python. I hope it helped you and added value to your knowledge.
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