This example shows how to deploy a minimal Flask application to Wasmer Edge.

https://wasmer-python-flask-server-worker.wasmer.app/

src/main.py defines the application:

• app = Flask(__name__) creates the WSGI app Wasmer will import (src.main:app).
• @app.route("/") responds with a simple string (“Hello, from Flask in Wasmer Edge 🚀”).
• The __main__ block runs the built-in server on host 0.0.0.0 and port 8000 for local testing.

Because the project has no external dependencies beyond Flask itself, it is ideal for learning the deployment flow.

python -m venv .venv
source .venv/bin/activate
pip install -r requirements.txt
python src/main.py

Visit http://127.0.0.1:8000/ to view the greeting.

1. Install dependencies during your build (pip install -r requirements.txt).
2. Expose the app as src.main:app in your Wasmer configuration (e.g., via wasmer.toml) and run gunicorn or the Flask dev server (python -m flask --app src.main run --host 0.0.0.0 --port $PORT).
3. Deploy and access https://<your-subdomain>.wasmer.app/.