Introduction to Django

 Python Installation 

Download Python from the following website

https://www.python.org/downloads/

python-3.9.0-amd64.exe will be downloaded. Double click on it to install. 

After installation go to the command prompt and check python is installed or not?

C:\Users\student>python

Python 3.9.0 (tags/v3.9.0:9cf6752, Oct  5 2020, 15:34:40) [MSC v.1927 64 bit (AMD64)] on win32

Type "help", "copyright", "credits" or "license" for more information.

>>>

">>>" This symbol is command prompt for python interpreter.

To exit from python beside command prompt type "exit()" and press enter key.

To check the version of python issue the following command.

C:\Users\student>python --version

Python 3.9.0

Installation of Django

Go to the command prompt and issue the following command.

C:\Users\student>pip install django

The above command installs "Django" software along with several packages.

After installation checks its version with the following command.

C:\Users\student>python -m django --version

3.1.3

Creating First Web Application Using Django

To create a web application, first, we need to create a project.

Procedure to create a Project

Assume that you are in "D" drive and "Gurujang" folder.

1) D:\Gurujang>django-admin startproject Guruproject

Note1:

Now a folder named "Guruproject" will be created inside "D:\Gurujang".

Inside "D:\Gurujang\Guruproject"

the same folder named "Guruproject" and a file named "manage.py" will be created.

Note2:

Again "D:\Gurujang\Guruproject\Guruproject" contains the following important files.

2)Now inside "Guruproject" we have to create app.

D:\Gurujang>cd Guruproject

D:\Gurujang\Guruproject>

Command to create App

D:\Gurujang\Guruproject>python manage.py startapp GuruApp

Note1:

With the above command, "GuruApp" will be created inside D:\Gurujang\Guruproject.

Note2:

D:\Gurujang\Guruproject\GuruApp Contains following important files.

      __init__, "admin.py", "models.py", "views.py"

3) Now make an entry "GuruApp" in the following location. In the file    D:\Gurujang\Guruproject\Guruproject\settings.py.

"GuruApp" should be added to "INSTALLED_APPS" section of "settings.py"

Ex: settings.py

INSTALLED_APPS = [

    'django.contrib.admin',

    'django.contrib.auth',

    'django.contrib.contenttypes',

    'django.contrib.sessions',

    'django.contrib.messages',

    'django.contrib.staticfiles',

    'GuruApp'

]

Now Project is Ready, To know the project is running or not, First, we need to start the "server".

Command to start/run the server

D:\Gurujang\Guruproject>python manage.py runserver

You will find the following screen after "Starting the Server"

4) Now open any browser(Ex: Google Chrome / IE ) and give the URL we are viewing on the server

    Type the URL http://127.0.0.1:8000/ in the browser followed by enter key.

If you see the following screen, you assure that your project is working Successfully.