Django Introduction

Django is a high-level Python web framework that enables developers to build robust and scalable web applications quickly. It encourages clean and pragmatic design by emphasizing reusable and maintainable code.

Step 1: Installing Django

To start using Django, you need to install it. Use the following command:

            pip install django
        

To confirm that Django has been installed successfully, type:

            django-admin --version
        

Step 2: Creating a Django Project

Once installed, you can create a new Django project using the following command:

            django-admin startproject myproject
        

This will create a directory named myproject with the following structure:

            myproject/
                manage.py
                myproject/
                    __init__.py
                    asgi.py
                    settings.py
                    urls.py
                    wsgi.py
        

Step 3: Running the Development Server

Navigate to your project folder and run the development server:

            cd myproject
            python manage.py runserver
        

After running this command, open your browser and go to http://127.0.0.1:8000 to see the default Django welcome page.

Step 4: Creating a Django App

Django organizes code into apps. To create an app, use the following command:

            python manage.py startapp myapp
        

This will create a directory named myapp with the following structure:

            myapp/
                migrations/
                __init__.py
                admin.py
                apps.py
                models.py
                tests.py
                views.py
        

Step 5: Writing a View

In the views.py file of your app, define a simple view function:

            from django.http import HttpResponse

            def home(request):
                return HttpResponse("Hello, Django!")
        

Step 6: Configuring URLs

Add the new view to your project's URL configuration. Open urls.py in the project folder and update it:

            from django.contrib import admin
            from django.urls import path
            from myapp.views import home

            urlpatterns = [
                path('admin/', admin.site.urls),
                path('', home, name='home'),
            ]
        

Now, navigate to http://127.0.0.1:8000 in your browser to see "Hello, Django!" displayed on the page.

Step 7: Next Steps

This is just the beginning! With Django, you can:

• Define models for database interaction
• Use Django's powerful admin interface
• Implement templates for dynamic HTML
• Handle forms and user authentication