python-aiohttpSetting CORS with Python Aiohttp?

Python Aiohttp supports setting CORS (Cross-Origin Resource Sharing) headers. This allows web applications to access resources from other domains.

Example code

from aiohttp import web

async def handle(request):
    response = web.Response()
    response.headers['Access-Control-Allow-Origin'] = '*'
    return response

app = web.Application()
app.router.add_get('/', handle)

web.run_app(app)

Output example

======== Running on http://0.0.0.0:8080 ========
(Press CTRL+C to quit)

Code explanation

• from aiohttp import web: imports the web module from the aiohttp library
• response.headers['Access-Control-Allow-Origin'] = '*': sets the Access-Control-Allow-Origin header to allow requests from any domain
• app.router.add_get('/', handle): adds a route to the application that will handle GET requests
• web.run_app(app): starts the web application

Helpful links

• Aiohttp Documentation
• MDN Web Docs - CORS

Edit this code on GitHub