Learn TORNADO-REST with Real Code Examples

Install Python 3.9+

Install Tornado: `pip install tornado`

Create application script with `tornado.web.Application`

Define request handlers and URL routing

Start server with `IOLoop.current().start()`

Install Python 3.9+

Create virtual environment

Install Tornado and dependencies

Write app.py and handlers

Run server and test endpoints

app.py - main server entry

handlers/ - request and WebSocket handlers

services/ - optional business logic

static/ - optional static files

requirements.txt - Python dependencies

pip install tornado - install framework

python app.py - start Tornado server

pytest - run tests

pip install <async library> - add dependency

virtualenv venv - setup isolated Python environment

Manual via Python libraries like Babel

UTF-8 content supported by default

Locale selection handled in handlers

Integrate translations externally if needed

No built-in i18n in core Tornado

Endpoints accessible via HTTP clients

CORS headers configurable

Supports WebSocket clients

Input validation required manually

Test with async clients and automated scripts

Primarily JSON REST API responses

Optional WebSocket real-time data

Minimal HTML support; integrate templates manually

Front-end frameworks optional

Serve static files with Tornado StaticFileHandler

Handlers manage per-request state

Shared state via external DB or cache

Sessions can be implemented via cookies or Redis

IOLoop manages async event state

WebSockets maintain persistent connection state

Database handled via async ORMs or clients

Serialize/deserialize JSON payloads manually or via helpers

Caching frequent data externally

Logs track requests and errors

Manage concurrency with async patterns