Cheatsheet¶
Basic App¶
from quart import Quart
app = Quart(__name__)
@app.route("/hello")
async def hello():
return "Hello, World!"
if __name__ == "__main__":
app.run(debug=True)
Routing¶
@app.route("/hello/<string: name>") # example.com/hello/quart
async def hello(name):
return f"Hello, {name}!"
Request Methods¶
@app.route("/get") # GET Only by default
@app.route("/get", methods=["GET", "POST"]) # GET and POST
@app.route("/get", methods=["DELETE"]) # Just DELETE
JSON Responses¶
@app.route("/hello")
async def hello():
return {"Hello": "World!"}
Template Rendering¶
from quart import render_template
@app.route("/hello")
async def hello():
return await render_template("index.html") # Required to be in templates/
Configuration¶
import json
import toml
app.config["VALUE"] = "something"
app.config.from_file("filename.toml", toml.load)
app.config.from_file("filename.json", json.load)
Request¶
from quart import request
@app.route("/hello")
async def hello():
request.method
request.url
request.headers["X-Bob"]
request.args.get("a") # Query string e.g. example.com/hello?a=2
await request.get_data() # Full raw body
(await request.form)["name"]
(await request.get_json())["key"]
request.cookies.get("name")
WebSocket¶
from quart import websocket
@app.websocket("/ws")
async def ws():
websocket.headers
while True:
try:
data = await websocket.receive()
await websocket.send(f"Echo {data}")
except asyncio.CancelledError:
# Handle disconnect
raise
Cookies¶
from quart import make_response
@app.route("/hello")
async def hello():
response = await make_response("Hello")
response.set_cookie("name", "value")
return response
Abort¶
from quart import abort
@app.route("/hello")
async def hello():
abort(409)
HTTP/2 & HTTP/3 Server Push¶
from quart import make_push_promise, url_for
@app.route("/hello")
async def hello():
await make_push_promise(url_for('static', filename='css/minimal.css'))
...