pip install selenium
        

python setup.py install
        

Set up the browser drivers
Automate a browser by setting it up on your system.
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With Selenium's WebDriver, you can connect to all major browsers, including Firefox, Chrome/Chromium, Edge, Internet Explorer, Safari, and Opera. In addition, the automated feature of WebDriver will be used if the browser supports it.Selenium does not include these implementations in the standard distribution because no browser vendors provide them.

Use Selenium to open and close browsers.
‍Installing and configuring a Selenium library and a browser driver allow you to start and stop sessions in the browser.

Upon starting a browser, it will usually provide settings that describe what capabilities it should support and how the session should be handled. Of course, each browser's capabilities differ, but all of them share some.

Chrome
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Chrome v75 and above are required to run Selenium 4. In addition, ensure that Chrome and Chrome driver are both the same version as your Chrome browser.

Chrome has its features on top of the shared ones.
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options = ChromeOptions()
  driver = webdriver.Chrome(options=options)

  driver.quit()
        

Start writing a Selenium script
A step-by-step guide to writing a Selenium script
Installing Selenium and its drivers gives you the ability to write Selenium code.
Eight essential components
When Selenium calls the browser, it requests information or sends commands to it. There are several basic Selenium commands that you will frequently use:
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Bringing everything together
The following eight points form a complete script

from selenium import webdriver
from selenium.webdriver.common.by import By


driver = webdriver.Chrome()

driver.get("https://www.google.com")

driver.title # => "Google"

driver.implicitly_wait(0.5)

search_box = driver.find_element(By.NAME, "q")
search_button = driver.find_element(By.NAME, "btnK")

search_box.send_keys("Selenium")
search_button.click()

driver.find_element(By.NAME, "q").get_attribute("value") # => "Selenium"

driver.quit()

        

What is Cypress?
Cypress is a JavaScript front-end testing application that uses mocha framework to run asynchronous tests within the browser. It was created in response to the changing requirements of the modern web.
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Cypress is capable of assisting with writing both unit and integration tests. Shortly, Cypress is both architecturally and logically different from Selenium.
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Using Cypress, developers can implement frontend code and test unit functionality with an agile testing methodology. Cypress is based upon the JavaScript language, which can be both Cypress's strength and weakness, depending on the user's needs.

Cypress automation has the same phases as other automation frameworks. 

‍Test creation > Scripting the tests > Testing > Debugging the tests.

‍Front-end developers familiar with JavaScript will find Cypress an invaluable tool, but their effectiveness will be diminished if they do not adhere to these specific parameters.

Key benefits of Cypress
Cypress, a fast, reliable, and futuristic tool, makes test automation possible. Here are some contributing factors:
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Disadvantages of Cypress
Although this tool is new and exciting, there is room for improvement. There are several notable flaws about it:
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Installing Cypress via NPM
Launch npm (the Node package manager) from the project directory and run the following command:

npm init
        

Package.json is created by running the command above. The package name, description, keywords, and author are just a few of the basic details to include. After filling in all the relevant details, the package.json file looks like the following.

Img Src - https://www.browserstack.com/guide/cypress-installation-for-test-automation 
You will need to run the following command after completing the installation.
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npm install cypress --save-dev
        

This command instals Cypress locally for the given project as a development dependency.
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Compare Cypress and Selenium
The Selenium framework and Cypress are both open-source tools for automating web tests. Listed below are their key differences.

that we've compared Cypress and Selenium, it's time to see whether the new entry is as good as its competitors. Can Cypress replace Selenium? Does each tool serve a different purpose? The comparison is as follows:
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Front-end vs. end-to-end testing
‍Using Selenium WebDriver, you can test web applications end-to-end. This type of testing is relatively new among developers, so QA managers have extensively used it for frontend testing. This trend has been reinforced in agile software development methodologies since front-end developers must test their code before the method is truly leveraged. Developing test code and integration and end-to-end functional tests for frontend builders enable them to evaluate how their creations work on actual browsers.

Language support
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The significant difference between Cypress and Selenium is that Cypress is an open-source tool that supports various languages, including Python, C#, Ruby, Objective-C, R, Dart, and JavaScript. At the same time, Selenium is only available as a JavaScript-based product. Even though this tool is primarily aimed at frontend developers using JavaScript, it is not accurate to claim it is a limitation of Cypress because web browsers only understand this language. Cypress can handle a wide range of users' needs even if it supports only one language. Because it is widely used worldwide, this powerful and concise language is suitable for a wide range of users. In contrast, Selenium, a regression testing tool and an end-to-end tool, allows for multiple language bindings for its API. Because of this, it is a better choice for teams that perform multiple tasks.
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The Test Framework
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‍In terms of testing frameworks, Cypress offers more than language options. The only way to use Cypress's Mocha framework is to write tests. Mocha serves the same function as NUnit or Junit in Java in C#. Cypress provides only a specific testing framework for JavaScript, however. Frontend developers who use this testing tool cannot use Jest or Tape, as Cypress only provides a specific testing framework.

In contrast, Selenium WebDriver does not suffer from such limitations. It should be noted that Selenium testing does not even require a testing framework. The method collects information from a browser and crawls web pages.
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Integrated server mocking
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‍Cypress is sometimes boasted as being faster than Selenium. A key part of its performance is its built-in mocking functionality. Cypress understands that most front-end developers have redundant needs since they are focused on the needs of their target users. Therefore, they use mock XML HTTP requests instead to speed up testing. This approach will be seamless and faster as part of Cypress's integrated mocking functionality. Selenium WebDriver allows you to mock server responses, but it's a little more complicated. As a result, Selenium mock servers return accurate responses to accurately mock server responses. Thus, a built-in server mocking function makes things more accessible and efficient.

FAQ's
‍‍Does Cypress perform better than Selenium?
The purposes of Selenium and Cypress are different. There is a wide audience for Selenium. However, Cypress is a different product with a different target market from the one that uses Web automation testing. Choosing a tool based on your needs comes down to knowing your requirements.

Does Cypress replace Selenium?
Cypress is ideally suited for developers new to test automation rather than similarly replacing Selenium. As such, it is one of the fastest-growing automation tools on the planet. However, Selenium is more suitable for a broader audience and is more general-purpose.
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Which tool is better than Selenium?
Cypress, a JavaScript test automation solution, is one of the most popular alternatives to Selenium. It enables testers to code JavaScript scripts to automate web tests, which can be used in web testing processes. In recent years, Cypress has gained traction as an alternative to Selenium for test automation.

Why is Cypress so popular?
The comparison between Cypress and Selenium is primarily due to the developer community's increasing interest in Cypress. It is possible to write unit tests, end-to-end tests, and integration tests with Cypress. In addition, Cypress supports only JavaScript, unlike Selenium WebDriver, which supports multiple languages.

Should I use Cypress?
A huge use case for Cypress has been front-end testing. As a result, the Cypress tool is an excellent option for users familiar with JavaScript and looking to automate testing on their local machine.

Conclusion!
‍With Selenium and Cypress as our benchmarks, we discussed two major web automation testing players: Selenium and Cypress. The emerging technology (Cypress) aims to gain ground. 
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Cypress offers many features that Selenium lacks, such as automatic scrolling, reloading in real-time, time travel, and top-notch performance. 
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Meanwhile, Selenium offers features like remote execution, cross-browser compatibility, provision to perform tests in different programming languages, and more. 
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Considering how different Selenium and Cypress are, it would be wise to select an appropriate tool for your needs, skill-set, etc. Always look at the long-term implications of your choice and be sure to make the right choice.