I'm using fastAPI for serving my ML models in many projects this year
Hope I can make some contributions

🚀 It's great!
May I open a discussion for 🇰🇷 Korean translation?
I want to discuss with people who want to translate Korean and talk about writing style, glossaries, and any stuff freely.

Hi. I have implemented a websocket using fastapi. I am load testing it using Jmeter websocket sampler and some of these requests are failing with WebSocket I/O error: Read timed out (at least this is the error that I get on Jmeter side). The error on server side:

import json

import uvicorn
from fastapi import FastAPI, Request
from fastapi.middleware.cors import CORSMiddleware
from starlette.websockets import WebSocket


app = FastAPI()



@app.get("/hello")
def index():
    return {"message": "hello"}


@app.websocket("/post")
async def post_req(websocket: WebSocket):
    await websocket.accept()
    while True:
        body = await websocket.receive_json()
        print(body)
        await websocket.send_text("some text")


if __name__ == "__main__":
    uvicorn.run(app, host="0.0.0.0", port=8443)

ERROR:    Exception in ASGI application
Traceback (most recent call last):
  File "/home/udit.pandey/Desktop/workspace/chat_server/venv/lib/python3.7/site-packages/uvicorn/protocols/websockets/websockets_impl.py", line 157, in run_asgi
    result = await self.app(self.scope, self.asgi_receive, self.asgi_send)
  File "/home/udit.pandey/Desktop/workspace/chat_server/venv/lib/python3.7/site-packages/uvicorn/middleware/proxy_headers.py", line 45, in __call__
    return await self.app(scope, receive, send)
  File "/home/udit.pandey/Desktop/workspace/chat_server/venv/lib/python3.7/site-packages/fastapi/applications.py", line 199, in __call__
    await super().__call__(scope, receive, send)
  File "/home/udit.pandey/Desktop/workspace/chat_server/venv/lib/python3.7/site-packages/starlette/applications.py", line 111, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/home/udit.pandey/Desktop/workspace/chat_server/venv/lib/python3.7/site-packages/starlette/middleware/errors.py", line 146, in __call__
    await self.app(scope, receive, send)
  File "/home/udit.pandey/Desktop/workspace/chat_server/venv/lib/python3.7/site-packages/starlette/exceptions.py", line 58, in __call__
    await self.app(scope, receive, send)
  File "/home/udit.pandey/Desktop/workspace/chat_server/venv/lib/python3.7/site-packages/starlette/routing.py", line 566, in __call__
    await route.handle(scope, receive, send)
  File "/home/udit.pandey/Desktop/workspace/chat_server/venv/lib/python3.7/site-packages/starlette/routing.py", line 283, in handle
    await self.app(scope, receive, send)
  File "/home/udit.pandey/Desktop/workspace/chat_server/venv/lib/python3.7/site-packages/starlette/routing.py", line 57, in app
    await func(session)
  File "/home/udit.pandey/Desktop/workspace/chat_server/venv/lib/python3.7/site-packages/fastapi/routing.py", line 247, in app
    await dependant.call(**values)
  File "./websocket.py", line 29, in post_req
    body = await websocket.receive_json()
  File "/home/udit.pandey/Desktop/workspace/chat_server/venv/lib/python3.7/site-packages/starlette/websockets.py", line 98, in receive_json
    self._raise_on_disconnect(message)
  File "/home/udit.pandey/Desktop/workspace/chat_server/venv/lib/python3.7/site-packages/starlette/websockets.py", line 80, in _raise_on_disconnect
    raise WebSocketDisconnect(message["code"])
starlette.websockets.WebSocketDisconnect: 1006

There are 2 scenarios that I have covered with this:

1. 5 users spawned within 10sec
   Result: No failures.
2. 10 users spawned within 10sec
   Result: Random failures with error "WebSocket I/O error: Read timed out" on Jmeter sampler.

Any help on this is greatly appreciated. Thanks.

Hello!
I am trying to create a Facebook chatbot using FastAPI but I cannot find how I can connect FastAPI to Facebook.
Is there anybody who knows how to do it?

Hi,
Trying to get something work quickly with FastAPI, I have started with full-stack-fastapi-postgresql I thought it would be easy to modify to my needs but it is quite overwhelming.
First change I wan to make is change the authentication to Google Oauth or add Google Oauth as and extra for accessing some parts of the website. Where should I start?
Thank you.

Hello, devs.
I got the following error after deploying through Lambda Function and creating API Gateway on AWS. I haven't found anything like it yet in the community.
From what it looks like something like the AWS proxy blocking the Swagger route. Has anyone got this error?

Thanks, guys.

Hi tthere my query is quite simple but still confusing for me so the issue I am facing is that I am trying to retrive data but my data is coming from relationships tables also so in response body I am getting only the parent table data but not the data from relatinships table as well so how can I SOLVE this issue?
https://stackoverflow.com/questions/72840483/how-to-response-the-relationship-data-in-fastapi
here is the complete question in details

New FastAPI user trying to read a post request that contains Basic Auth, a header "client_id", and a json body.

Using bits of code from https://fastapi.tiangolo.com/tutorial I got BasicAuth to work, and I got Request to work to grab the headers and body. Headers also appears to get the username and password too, but I don't have access to them without the Authentication part.

@app.post("/home")
async def root(request: Request)
   my_id = request.headers.get('client_id')
   my_user = request.user

AssertionError: AuthenticationMiddleware must be installed to access request.user

If I just use root(credentials: HTTPBasicCredentials = Depends(security)) then I can get the user and password.

I was hoping to find an example how to get all 3 parts, or I am misunderstanding what it might be called to get them?

What is would be the best testing framework for FastAPI + SQLModel + Alembic application?

Hi, Does FastAPI support any data engineering libraries other than pandas that can be used efficiently and in an optimized way to process the data in FastAPI application ? FastAPI application will be deployed in kubernetes environment.

We are dealing with huge number of data (let's say around 50,000 records per API request) that will be processed, transformed to the required schema format in our FastAPI application.

Hi all! For me it would be quite practical right now to process an arbitrary form from a FastAPI method, like this:

@app.post("/")
def process_any_form( ... ):
    pass

The problem is – how do I specify it (the (...) part of the code above ...)? When I look into the docs, I need to specify all fields of the form. What do I do if I don't know them in advance?

Thanks for any hints!

Actually I haven't much idea what is FastAPI and Why use it.
So I am gonna start with researching what is special in websites built using FastAPI.
If there is anyone who is gonna help poor newbie, I would appreciate it much!
Anyone can provide some links of websites built using FastAPI?

@oscarcheerup Hey there, it is great to know that you're excited about learning FastAPI, if you are looking for any websites built using FastAPI then let me tell you that, FastAPI is a backend technology that is used to develop servers for websites, and to learn about it I will recommend the official documentation, they have structured it in pretty good format such that you will find everything easy and learning will be smooth, here you go fastapi docs.

hello guys , actually I am working in a project and I couldn't figure out . How to do that stuff . frontend is next js and backend is fast API so my question is I am storing some responses in this format
responses = {
"What is apple ?": " Apple is a red coloured fruit ."
}

How can I fetch it in a rich text editor format in frontend ? What libraries should I use ??

👋 Hello, FastAPI Community!

I'm Sanjin, and I've been using FastAPI for two years to build backends for a statewide coding competition in Melbourne, Australia. 🇦🇺 So far, over 5,000 students have used it, and the backend has held up great! 💪

🚀 This Year's Ambitious Setup

We're running an exciting project with these features:

• 🤖 Students submit code agents that compete in games like Prisoner's Dilemma
• 🐳 Code runs safely in Docker containers
• 🗃️ Database is in SQLModel and running smoothly
• 🔌 Modular game engine design for super easy addition of new game types
• ⚛️ Front-end is React (not pretty, but functional)

🔗 Check It Out!

You can find the project here: Agent Games on GitHub

🙏 Feedback and Collaboration Welcome

I'd love any feedback on the project! The full-stack app takes just 10 minutes to set up locally. There are usually a dozen issues you can take on if you're interested in collaborating as well as an opportunity to create much cooler games than we came up with so far!

Let's build something amazing together! 🌟