Development

The first thing that should be mentioned is that the webserver that is integrated into Sanic is not just a development server.

It is production ready, provided you are not in debug mode.

Debug mode

By setting the debug mode a more verbose output from Sanic will be output and the Automatic Reloader will be activated.

from sanic import Sanic
from sanic.response import json
app = Sanic(__name__)
@app.route("/")
async def hello_world(request):
    return json({"hello": "world"})
if __name__ == "__main__":
    app.run(host="0.0.0.0", port=1234, debug=True)

WARNING

Sanic's debug mode will slow down the server's performance and is therefore advised to enable it only in development environments.

Automatic Reloader

Sanic offers a way to enable or disable the Automatic Reloader manually (and independent from debug mode). The auto_reload argument will activate or deactivate the Automatic Reloader.

app.run(auto_reload=True)