Python for Web Development
Python's Role on the Web
Python is a general-purpose programming language, and it is used for web development when developers build websites, web applications or APIs with it. The language is known for readable syntax and a large standard library, and it is also widely used in data science and machine learning.
On the web, Python is usually a back-end language. It handles requests, applies business rules, reads and writes databases, and returns HTML or JSON to the browser or to other software. The code that runs in the visitor's browser is still written in HTML, CSS and JavaScript.
Common uses include:
- Content-driven sites and admin-heavy applications built with Django
- Lightweight services and APIs built with Flask or FastAPI
- Back ends that serve data processing or machine learning features
How Python Web Apps Run on a Server
A Python web application does not run inside the web server the way PHP files often do. Instead, it runs inside an application server, such as Gunicorn or Uvicorn, which keeps the Python program running and talks to the web server through a standard interface. The web server, commonly Nginx or Apache, receives visitor traffic, serves static files and forwards dynamic requests to the application.
Python code also depends on packages installed from the Python Package Index, usually into an isolated virtual environment. The project lists its requirements in a file, and the server installs them before the application starts.
Python Hosting Compared With PHP Hosting
PHP hosting is widely available because PHP is supported by most shared hosting platforms and is enabled by default in many control panels. Python hosting is less common on basic shared plans. It usually requires a virtual private server, a platform service or a shared plan that offers a dedicated Python application feature.
Python apps also need more active management. The application must stay running, restart after a crash and reload its code after updates. Dependencies have to match the Python version on the server, and secrets such as database passwords are normally stored in environment variables rather than in the code.
Frequently asked questions
Is Python good for building websites?
Yes, for many types of sites. Python frameworks such as Django provide built-in admin interfaces, authentication and database tools, which suit content management, dashboards and data-heavy applications. For a simple brochure site, a static site or a PHP content management system may be less work to host. The best choice depends on the project and the hosting available.
Can Python run on shared hosting?
Sometimes. Some shared hosting providers offer a Python application manager that runs an app under a managed process, but many shared plans support only PHP and static files. Check whether the host documents Python support and which versions it offers before you commit to a plan.