Everything About Django - 1 (How To Start)

This is the first blog of the series Everything About Django.

Prerequisite

Just Install Python3 in your system along with pip.

What is Django?

Django is a full stack open source web framework built on top of Python.

How to setup Virtual Environment?

A virtual environment is a Python environment such that the Python interpreter, libraries and scripts installed into it are isolated from those installed in other virtual environments, and the whole system. With virtual environment, you can seperate all the packages and requirements you need for each project. It works in a similar way to package.json in Javascript.

Install pipenv using pip pip install pipenv

Create a folder dev and open command prompt inside it.

Create a virtualenv with pipenv pipenv install

Type pipenv shell

This activates our virtual environment.

Type pip freeze to check the libraries installed. It will give no result as no python libraries are installed in this environment yet.

Install Django

We will be using Django 2.2.6 (3 can also be used).
pip install django==2.2.6
This installs our Django.

Creating a Django Project

We will create a django project named Beginner.
Once our django is installed, we get access to django-admin which is a django administrator with which we initialize our new project.
Type in the same command prompt : django-admin startproject Beginner
This creates our new Django project.

Django Project Created

This is our Django Project created. Let's look at the files.

Inside our parent Beginner Folder, we have the following structure :

Beginner Folder : This folder has the same name as our Parent folder(Project Name). It contains all the settings and configurations of the whole project.

__init__.py : This file tells the interpreter that it's a python project.
settings.py : This file contains all the configurations of this project like SECRET_KEY, ALLOWED_HOSTS, INSTALLED_APPS, MIDDLEWARES, 'STATIC FILES CONFIG`, etc. We will discuss about all of this in detail in a seperate blog.
urls.py : This file contains the root level url configurations. When we run our project, all the urls are checked and matched from this file.
wsgi.py : This file is the entry point of our project for the web servers during deployment. This file actually connects the web server with our django project. From Django 3.0, we also have asgi.py file. ASGI is the successor of WSGI which would need a seperate blog for discussion.

manage.py : This python file is located at the root directory. This is same as django-admin. It works like a django administrator but only works for the current project. We can control the whole project with this command like python manage.py runserver - We can run this file by giving instructions with it like runserver, createsuperuser, etc.

How to Run my Project?

Let's go to our same command prompt and go inside the Beginner folder cd Beginner and type : python manage.py runserver. This runs our django project on our system's localhost at port 8000: http://localhost:8000/
This is what our command prompt shows :