Django and how to use it in Python website development

Django is a well-known Python web framework with a wide user base and a powerful feature set. In Python website development, Django can be used to build various applications and websites quickly, stably, and flexibly. This article will explore the use of Django and its practical application cases in Python website development.

1. The main features of Django

The Django framework has the following features:

1. Highly modular: The Django architecture is highly modular, so it can be used in a variety of sizes and types and complexity of projects.

2. Easy to write: The Django framework is easy to write, and its code is concise, easy to read, and easy to understand.

3. Extensibility: Django is easy to extend and customize, so functions or modules can be added and modified as needed.

4. Powerful database applications: Django is widely used and provides a variety of database application functions, including object-relational mapping (ORM), data validation and query, object identification, association and nesting, transactions and concurrency.

5. Flexibility: Django has a flexible architecture and supports a variety of views, templates and static files. It also provides many useful default settings, widgets and templates to make the development process easier.

6. Reliability: Django provides many useful testing and troubleshooting tools to ensure the reliability and stability of your application.

2. How to use Django

1. Install Django

Before installing Django, make sure that Python is installed (the version should be 2.6 or above or 3.3 or above). To install Django, you can use pip, Python's own package manager. Just enter pip install django in the terminal or download and install it directly.

2. Create a Django project

Enter the following command in the terminal to create a Django project: django-admin startproject project_name

3. Create a Django application

In Django, an application refers to a component that performs a specific function. Enter the following command in the terminal to create a Django application: python manage.py startapp app_name

4. Configure and start the server

In Django, the server refers to the actual running time of the Django project. The web server used. Before configuration, you need to configure DATABASES and INSTALLED_APPS, and then enter the following command in the terminal to start the built-in development server: python manage.py runserver

5. Create models and views

Django A model is a way of getting or storing data from a database. A view refers to the way data is displayed and how it is retrieved and stored. Django's models and views are closely related, so a connection must be established between the model and the view. The model is written in models.py, and the view is written in views.py. Django's template is the HTML rendered from the data received from the view.

6. Deploy Django application

Before deployment, you need to make some settings in the settings.py file, such as SECRET_KEY, ALLOWED_HOSTS, DEBUG, etc., and then you can use various production servers (such as Apache, Nginx, and Lighttpd) to deploy Django applications.

3. Practical application cases of Django in Python website development

Django is widely used in Python website development. The following are some of the practical application cases:

1. Academic Search Engine: The PyCon Blog already uses the Django framework, which allows users to search for papers, blogs, conferences, people, and organizations in the Python academic community.

2. Social media platform: The Discourse social media platform also uses the Django framework, which provides open source code and cloud-based services where users can search and discuss various topics.

3. Favorite artists: Artsy is an artist sharing platform that also uses the Django framework, allowing artists to create homepages, share works and communicate on the platform.

4. Summary

Django is one of the most popular frameworks in Python web development. Its highly modular, easy to write, scalability and reliability characteristics make it an ideal choice for Python website development. has been widely used. This article explores the use of Django and its practical application cases in Python website development, which can help developers better understand and apply the Django framework.

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