Django Overview
- An introduction to Django framework, its architecture, features, and benefits for web development.
Why Learn Django After Python? (Career Perspective)
After learning Python, the next big career step in Web Development is to learn a backend framework.
👉 Django is one of the most popular Python web frameworks, used to build:
Dynamic websites
Secure backend systems
APIs
Enterprise-level web applications
Many companies prefer Django because it is:
Fast to develop
Secure
Scalable
Written fully in Python
Lesson Name: Django Overview
1. What is Django?
Django is a high-level Python web framework that helps developers build web applications quickly and cleanly.
In Simple Words:
Django helps you create websites without writing everything from scratch.
Official Definition:
Django is a free and open-source web framework written in Python that follows the MVT (Model-View-Template) architecture.
Key Idea:
Handles backend logic
Connects with databases
Manages URLs
Provides security
Handles user authentication
Simple Django Project Structure
myproject/
│
├── manage.py
├── myproject/
│ ├── __init__.py
│ ├── settings.py
│ ├── urls.py
│ ├── asgi.py
│ └── wsgi.py
Explanation:
manage.py → Run Django commands
settings.py → Project configuration
urls.py → URL routing
wsgi.py / asgi.py → Deployment related files
2. Why Django is Used?
Django is used because it solves common web development problems.
Problems Django Solves:
Real-Life Example:
Instead of writing 1000+ lines of code for login, Django provides it out of the box.
Starting Django Development Server
Shows how Django runs a local web server
python manage.py runserver
Result:
Server runs on http://127.0.0.1:8000/
Confirms Django is working
3. Features & Advantages of Django
Core Features:
1. Rapid Development
Build applications faster
Less coding, more logic
2. Built-in Admin Panel
Automatic admin dashboard
Manage data without coding UI
3. ORM (Object Relational Mapper)
No need to write raw SQL
Python classes ↔ Database tables
4. Security
Protects against:
SQL Injection
CSRF
XSS
Clickjacking
5. Scalability
Used by large platforms
Handles millions of users
Django Model Example
Converts Python class into Database table
from django.db import models
class Student(models.Model):
name = models.CharField(max_length=100)
email = models.EmailField()
age = models.IntegerField()
def __str__(self):
return self.name
Explanation:
Student → Database table
Fields → Table columns
Django auto-creates SQL queries
4. Use-Cases of Django
Django is used in real-world production systems.
Industry Use-Cases:
Companies Using Django:
Instagram
Mozilla
Pinterest
Spotify
Disqus
Django View Example
Handles request and sends response
from django.http import HttpResponse
def home(request):
return HttpResponse("Welcome to Django Web Development")
Explanation:
request → Client request
HttpResponse → Server response
5. Django vs Other Frameworks
Comparison Table:
Django vs Flask (Python):
Django → Large, secure, enterprise apps
Flask → Small, lightweight apps