Questions about Starlette (a lightweight python ASGI framework/toolkit).
Starlette is a lightweight ASGI framework/toolkit, which is ideal for building high performance asyncio services.
Questions tagged [starlette]
259 questions
11
votes
2 answers
Starlette/FastApi route path components with forward slash
I have defined a route in Starlette/FastApi -
@router.post("/{part}")
def post_method(part):
return "ok"
@router.post("/{part}/{another_part}")
def another_post_method(part, another_part):
return "ok"
I have some forward slash in the path…
hangc
- 4,730
- 10
- 33
- 66
11
votes
3 answers
Return multiple files from fastapi
Using fastapi, I can't figure out how to send multiple files as a response. For example, to send a single file, I'll use something like this
from fastapi import FastAPI, Response
app = FastAPI()
@app.get("/image_from_id/")
async def…
Hooked
- 84,485
- 43
- 192
- 261
11
votes
1 answer
FastAPI - mocking path function has no effect
I've got a simple FastAPI application and I'm trying to create tests with pytest for it.
My goal is to test how app behaves in case of different errors.
I've got a simple healthcheck route in my app:
from fastapi import APIRouter
router =…
umat
- 607
- 1
- 13
- 25
10
votes
7 answers
Get starlette request body in the middleware context
I have such middleware
class RequestContext(BaseHTTPMiddleware):
async def dispatch(self, request: Request, call_next: RequestResponseEndpoint):
request_id = request_ctx.set(str(uuid4())) # generate uuid to request
body = await…
sashaaero
- 2,618
- 5
- 23
- 41
10
votes
0 answers
RuntimeError: unable to perform operation on TCPTransport the handler is closed
I'm trying to make an HTTP benchmark test on my local machine with autocannon tool to my fresh, brand-new project setup that I've built on FastAPI + uvicorn.
But at some point or randomly (I don't know what's happening) I'm having an ASGI…
yigidix
- 123
- 6
9
votes
1 answer
FastAPI - How to get app instance inside a router?
I want to get the app instance in my router file, what should I do ?
My main.py is as follows:
# ...
app = FastAPI()
app.machine_learning_model = joblib.load(some_path)
app.include_router(some_router)
# ...
Now I want to use…
DachuanZhao
- 1,181
- 3
- 15
- 34
9
votes
2 answers
fastapi (starlette) RedirectResponse redirect to post instead get method
I have encountered strange redirect behaviour after returning a RedirectResponse object
events.py
router = APIRouter()
@router.post('/create', response_model=EventBase)
async def event_create(
request: Request,
user_id: str =…
Jekson
- 2,892
- 8
- 44
- 79
8
votes
1 answer
How to share variables between HTTP requests in FastAPI?
How can I share the value of variables between HTTP requests in FastAPI? For instance, I have a POST request in which I get some audio files and then I convert their info into a Pandas Dataframe. I would like to send that Dataframe in a GET request,…
0x55b1E06FF
- 538
- 1
- 9
- 24
8
votes
1 answer
FastAPI websocket ping/pong timeout
I am using FastAPI with @app.websocket to listen for incoming websockets. How does FastAPI (or Starlette or Uvicorn underneath) do ping/pong heartbeats? Is this configurable? I cannot find it in the documentation at all.
from fastapi import FastAPI,…
Jonathan
- 1,864
- 17
- 26
8
votes
0 answers
Excessive File Handles (on lsof) When Python logging with Starlette and Uvicorn
I have a minimal starlette app running via uvicorn doing nothing but returning a ping. Strangely, even with a single thread, I have 45 file handles to my log file. The handles increase with hits to the app and plateau at 45. I'm counting file…
CoderOfTheNight
- 944
- 2
- 8
- 21
8
votes
1 answer
Uvicorn server shutting down unexpectedly
I'm working with FastAPI framework, served by Uvicorn server.
My application should run some time consuming numerical computation at a given endpoint (/run). For this I am using 'background_task' from fastAPI (which is basically 'background_task'…
Davide Melli
- 151
- 1
- 9
7
votes
1 answer
How to Upload a large File (≥3GB) to FastAPI backend?
I am trying to upload a large file (≥3GB) to my FastAPI server, without loading the entire file into memory, as my server has only 2GB of free memory.
Server side:
async def uploadfiles(upload_file: UploadFile = File(...):
Client side:
m =…
Yuqi Wang
- 135
- 1
- 2
- 8
7
votes
2 answers
FastAPI - adding route prefix to TestClient
I have a FastAPI app with a route prefix as /api/v1.
When I run the test it throws 404. I see this is because the TestClient is not able to find the route at /ping, and works perfectly when the route in the test case is changed to /api/v1/ping.
Is…
Shod
- 801
- 3
- 12
- 33
7
votes
0 answers
Starlette session state clearing
some strange behaviour I've found when trying to clear Starlette sessions state (using starlette.middleware.sessions.SessionMiddleware) while working through some OAuth/0Auth authentication examples.
In Flask, the following session clearing code on…
Dmytro Bugayev
- 606
- 9
- 13
7
votes
1 answer
Websockets bridge for audio stream in FastAPI
Objective
My objective is to consume an audio stream. Logically, this is my objective:
Audio stream comes through WebSocket A (FastAPI endpoint)
Audio stream is bridged to a different WebSocket, B, which will return a JSON (Rev-ai's WebSocket)
Json…
rmssoares
- 175
- 1
- 11