Python Workers now support WSGI and ASGI frameworks

Python web frameworks following the Web Server Gateway Interface (WSGI) ↗ or Asynchronous Server Gateway Interface (ASGI) ↗ specification can now be used in Python Workers.

Using web frameworks with Python Workers

Based on the web framework you are using, you can use either wsgi or asgi from the workers module.

WSGI frameworks

For WSGI frameworks like Django or Flask:

from workers import wsgi

from django.core.wsgi import get_wsgi_application

app = get_wsgi_application()
Default = wsgi.entrypoint(app)

The wsgi.entrypoint is equivalent to creating a WorkerEntrypoint class and using the wsgi.fetch method. If you want more control over the WorkerEntrypoint class, you can do so:

from workers import wsgi, WorkerEntrypoint

class Default(WorkerEntrypoint):
    async def fetch(self, request):
        return await wsgi.fetch(app, request, self.env)

ASGI frameworks

For ASGI frameworks like FastAPI or Starlette:

from workers import asgi

from fastapi import FastAPI

app = FastAPI()
Default = asgi.entrypoint(app)

For more information about using individual web frameworks, refer to the packages documentation in Python Workers.