Python Django is an open-source web framework that is written in Python. It is designed to help developers create scalable, maintainable, and secure web applications. With Django, developers can focus on writing high-level code, while the framework takes care of low-level details like database management, URL routing, and user authentication.

Django was created in 2003 by Adrian Holovaty and Simon Willison while working at the Lawrence Journal-World newspaper. They needed a framework that would allow them to quickly create complex web applications, and decided to build their own. Since then, Django has become one of the most popular web frameworks in the world, used by companies like Instagram, Pinterest, and Mozilla.

One of the key features of Django is its “batteries included” philosophy. Django comes with a wide range of built-in features and libraries that make it easy for developers to get started. For example, Django includes an Object-Relational Mapping (ORM) system that allows developers to interact with databases using Python code. It also includes a built-in admin interface that allows developers to manage their application’s data without writing any code.

Another key feature of Django is its emphasis on security. Django includes a number of built-in security features, such as protection against SQL injection and cross-site scripting (XSS) attacks. It also includes a user authentication system that makes it easy to implement user registration and login functionality.

Django’s URL routing system is also worth mentioning. It allows developers to define URL patterns that map to specific views, making it easy to create complex web applications with clean, easy-to-read URLs. Additionally, Django’s templating system makes it easy to create dynamic HTML pages, allowing developers to quickly iterate on their application’s design.

One of the biggest advantages of using Django is its scalability. Django is designed to scale horizontally, meaning that it can handle large amounts of traffic by adding more servers to a cluster. This makes it a great choice for large-scale web applications.

Django also has a large and active community, with thousands of developers contributing to its development and maintenance. This means that developers can easily find help and support when they run into problems or need advice.

Getting started with Django is easy. To begin, developers can install Django using Python’s package manager, pip. Once installed, developers can create a new Django project using the “django-admin startproject” command. This will create a new project with a basic file structure and settings.

From there, developers can create new apps using the “python manage.py startapp” command. This will create a new app with a file structure and basic templates. Developers can then define models, views, and templates for their app, and add it to the project’s URL routing system.

Django’s documentation is also excellent, with detailed guides and tutorials for every aspect of the framework. Additionally, there are a number of excellent third-party resources, including books, online courses, and forums.

Overall, Django is an excellent choice for developers looking to create scalable, maintainable, and secure web applications. Its “batteries included” philosophy, emphasis on security, and scalability make it a great choice for large-scale web applications. Additionally, its active community and excellent documentation make it easy for developers to get started and find help when they need it.

To install Djongo on your computer, follow these steps:

  1. Make sure you have Python installed on your computer. You can download the latest version of Python from the official website: https://www.python.org/downloads/
  2. Open a command prompt or terminal window on your computer.
  3. Use the pip package manager to install Djongo by typing the following command:

Syntax: pip install djongo

  1. Once the installation is complete, you can start using Djongo in your Python projects.

Note: Djongo requires MongoDB to be installed on your computer as well. You can download and install MongoDB from the official website: https://www.mongodb.com/try/download/community

After installing MongoDB, you need to start the MongoDB server by running the following command in your terminal or command prompt:

Syntax: mongod

This will start the MongoDB server and allow you to connect to it from your Python code using Djongo.

To test if Djongo is installed and working correctly, you can create a simple Django project and configure it to use Djongo as its database backend. Here’s how:

  1. Create a new Django project using the following command:

Syntax: django-admin startproject myproject

This will create a new Django project with the name “myproject”.

  1. Open the “settings.py” file in your project’s directory and add the following lines of code:

Syntax:

DATABASES = {
‘default’: {
‘ENGINE’: ‘djongo’,
‘NAME’: ‘mydatabase’,
}
}

This configures your Django project to use Djongo as its database backend and creates a new database called “mydatabase”.

  1. Start the Django development server by running the following command in your terminal or command prompt:

Syntax: python manage.py runserver

This will start the Django development server and allow you to access your project in your web browser.

  1. Create a new Django app using the following command:

Syntax: python manage.py startapp myapp

This will create a new Django app with the name “myapp”.

  1. Open the “models.py” file in your app’s directory and define a simple model:

Syntax:

from djongo import models

class Person(models.Model):
name = models.CharField(max_length=50)
age = models.IntegerField()

This defines a simple model called “Person” with two fields: “name” and “age”.

  1. Create a migration for your model by running the following commands:

Syntax:

python manage.py makemigrations
python manage.py migrate

This creates a new migration file for your model and applies it to your database.

  1. Open the Django shell by running the following command:

Syntax: python manage.py shell

This will open the Django shell and allow you to interact with your database using Python code.

  1. Test if your model is working correctly by creating a new Person object:

Syntax:

from myapp.models import Person

person = Person(name=’John’, age=30)
person.save()

This creates a new Person object with the name “John” and age “30” and saves it to the database.

  1. Test if your model is working correctly by retrieving all Person objects from the database:

Syntax:

persons = Person.objects.all()
for person in persons:
print(person.name, person.age)

This retrieves all Person objects from the database and prints their names and ages.

If you see the name “John” and age “30” printed in your terminal or command prompt, then Djongo is installed and working correctly on your computer.