Learn how to install Django and create a data-driven website

Django Installation Tutorial: Easily build a powerful data-driven website

Introduction:
With the rapid development of Internet technology, data-driven websites have received increasing attention. As a powerful web framework, Django is good at handling underlying data operations and business logic, and has become the preferred framework for many developers to build data-driven websites. This article will provide you with a detailed Django installation tutorial, with specific code examples to help beginners get started easily.

1. Preparation
Before installing Django, you need to ensure that the local environment has been set up. First, you need to install Python. It is recommended to use Python 3.x version, and then install pip as the Python package management tool. After the installation is complete, we can start installing Django.

2. Install Django

1. Open the command line window (cmd or PowerShell can be used on Windows)

2. Enter the following command and use pip to install Django ：

   pip install django

3. Create a Django project

1. In the command line window, switch to the directory where you want to create a Django project

2. Enter the following command to create a new Django project:

   django-admin startproject mywebsite

   Among them, mywebsite is the project name, and you can name it according to your own needs.

4. Run the Django project

1. Switch to the project directory just created:

   cd mywebsite

2. Enter the following command to start the Django development server:

   python manage.py runserver

3. Open the browser and enter http://localhost:8000/ in the address bar. You will see the Django default welcome page, indicating the project Already run successfully.

5. Create Django applications
Django applications are the basic unit for building Django projects. Each application can contain resources such as models, views, templates, and static files. Now, let's create a Django application.

1. In the command line window, switch to the project directory and use the following command to create a new Django application:

   python manage.py startapp myapp

   Where, myapp is the application name, you can Name it according to your own needs.

2. Add the newly created application to the INSTALLED_APPS parameter in the settings.py configuration file, such as:

   INSTALLED_APPS = [
       ...
       'myapp',
   ]

6. Write view functions and URLs Mapping
Django’s view function is the core method of handling user requests. We need to configure a URL mapping for each view function. Below is a simple example showing how to write view functions and URL mappings.

1. Open the views.py file in the myapp directory and write a simple view function:

   from django.http import HttpResponse
   
   def hello(request):
       return HttpResponse("Hello, Django!")

2. Open the urls.py in the mywebsite directory File, configure URL mapping:

   from django.contrib import admin
   from django.urls import path
   from myapp import views
   
   urlpatterns = [
       path('admin/', admin.site.urls),
       path('hello/', views.hello),
   ]

7. Run the Django application

1. In the command line window, make sure the current path is in the project directory, Run the following command:

   python manage.py runserver

2. Open the browser and enter http://localhost:8000/hello/ in the address bar. You will see "Hello, Django!" displayed on the page, indicating the application Already run successfully.

Conclusion:
This article details the installation steps of Django and provides specific code examples, hoping to help beginners get started quickly. As a powerful web framework, Django can provide developers with rich data-driven website functions and tools, helping us build more powerful and practical websites. I hope that through learning and practice, everyone can master the skills of using Django and create more surprising data-driven websites.

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