Installing Python & Selenium

Why Python ?

Python is my favorite Programming Language and it also happens be the only Programming Language I know.

C-Programming Language is the most widely used language of all times because it is a simple language to learn. JAVA is also widely used because it is an OBJECT-ORIENTED Programming Language.

Python has the simplicity of C-Programming-language and is an OBJECT-ORIENTED Programming Language like JAVA.

For developing games in Python we can use---pygame
For Testing we can use modules -----------------unittest, pytest,nose
For web-development-------------------------------django
For standalone Application-------------------------tkinter
For web-scrapping-----------------------------------urlib, BeautifulSoup

Google use python for its Search Engine
Instagram and Pinterest use Python's Django Framework

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Installing Python 

Step 1

Download Python from this URL or from "http://www.python.org"

 Step 2 :Open the Downloaded Python Installer

Step 3:Install python for all users

Python will be installed at C:\Python34\

Installation Begins

Installation Continues

Finally it is over

Step 4:Go to Start and type IDLE in the search box

Step 5:Open IDLE  

Step 6: type "import this"

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Configuring Python from Windows Command Line

Now in order to use Python from Window Command Line, we need to configure the PATH variable found in the SYSTEM VARIABLES

Step 1: Right click on My Computer and Select Properties

Step 2:Select Advanced System settings

Step 3: We need to change System Variable which is found in Environment Variables

Step 4: In System Variables we need to edit PATH variable, so Select PATH and Click Edit Button

Step 5: Editing the PATH variable

Please add  ;C:\Python34\

Don't leave any space after the last \

After changing the PATH variable click on OK Button.

Step 6: Clicking OK again

Step 7: Go to start and type CMD  in the search box

Step 8: Running python from windows Command Line

Now Type python in the command Prompt

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What is Selenium??

Selenium is an open source web-UI automation tool.

In particular let us focus on Selenium 2.0 (webdriver). WebDriver is a clean, fast framework for 

automation of web application

Key Features

• Multiple-browser support.Firefox,Chrome,Safari,Opera & IE
• Multiple-OS support.Windows,Linux,Android & IOS
• Multiple Language Support. Python,Ruby,Java

Installing Selenium--(Selenium webdriver)

Step 1:Run windows command shell prompt as Administrator

Step 2: Windows Shell opens 

Now type C:\Python34\Scripts\pip.exe install selenium 

in the shell 

   

The Download starts

Download Complete

Step 3: Verify the installation of selenium

We will access Python by Window shell by typing python

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Example 1---Using Selenium let us open Firefox browser

Step 1: we need to  import webdriver from Selenium

from selenium import webdriver

Step 2: create a firefox browser object

#creating firefox browser object using Firefox webdriver browser = webdriver.Firefox()

Example 2---Using Selenium to navigate to any valid URL

Step 1: we need to  import webdriver from selenium

from selenium import webdriver

Step 2: create a firefox browser object

#creating firefox browser object using Firefox webdriver browser = webdriver.Firefox()

Step 3: Navigate to "http://yahoo.com"
we can navigate to any valid URL using get--method.

#we can navigate to any valid URL using get--method browser.get('http://www.yahoo.com')

Example 3 ----Open a particular web-page and verify if Selenium has indeed opened the correct webpage

Step 1: we need to  import webdriver from selenium

from selenium import webdriver

Step 2:create a firefox browser object

#creating firefox browser object using Firefox webdriver browser = webdriver.Firefox()

Step 3: Navigate to "http://pythonselenium.blogspot.com"
we can navigate to any valid URL using get--method.

#navigate to "http://pythonselenium.blogspot.com" browser.get('http://pythonselenium.blogspot.com')

Step 4: Finding the Title of any given webpage
we can find it by this command.

print(browser.title)


Step 5: In-order to verify that selenium has opened the correct web-page we verify it using title of web-page

assert "Selenium using python" in browser.title

Step 6: Closing the browser

browser.close()

The complete code for Example 3

from selenium import webdriver #Starting browser session browser = webdriver.Firefox() #Nagivate to a particular URL browser.get("http://pythonselenium.blogspot.com") #We check for the title by this we are sure we have loaded the correct page assert "pythonselenium" in browser.title #Close the browser browser.close()