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Questions tagged [fastapi]

FastAPI is a modern, fast (high-performance), web framework for building APIs with Python 3.6+ based on standard Python type hints.

FastAPI is a modern, fast (high-performance), web framework for building APIs with Python 3.6+ based on standard Python type hints. FastAPI is released under the terms of the MIT license.

Some notable features of FastAPI are:

  • Based on open standards like OpenAPI and JSON Schema.
  • Automatic docs including Swagger UI and ReDoc
  • Just Modern Python (based on standard Python 3.6 type declarations)
  • Editor support (especially auto-completion)
  • Written on top of Starlette, inherits all its features and provides native ASYNC support
  • Uses Pydantic to validate request and response which is Pythonic and developer does not need to learn another micro-framework to write validation schemas for requests and responses
  • Native Dependency Injection System
  • Useful Plugins

And other features described in detail here.

Documentation: https://fastapi.tiangolo.com

Source Code: https://github.com/tiangolo/fastapi

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fastapi testing (RuntimeError("Task ... running at ... got Future ... attached to a different loop")

RuntimeError("Task cb=[_run_until_complete_cb() at /usr/lib/python3.8/asyncio/base_events.py:184]> got Future
salius
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Apscheduler clock process crashes every time

I am creating a fairly straightforward little app, and am trying to use apscheduler to send a text to a user at a certain time. It works wonderfully locally, but the clock process, as specified in the Procfile, crashes every time. The only…
J. B.
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Raising Exception from ApiRouter does not run the exception handler, returns 500 internal server error instead. FAST API

I am raising a custom exception in a Fast API using an API Router added to a Fast API. I am defining the exception class and handler and adding them both using the following code. It was working before and now I am not quite sure what is the issue.…
Aidan Tan
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Exception in ASGI application Of FastAPI

I'm using FastAPI and the following error is reported, but I don't know where the error is when I'm tracing. I have read this link, but it's no…
gthank
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Conditionally set FastAPI response model for route

I'm trying to return a list of objects of type Company, including only "approved" ones, and with more or less attributes depending on whether the user requesting the list is a superuser or a regular user. This is my code so far: @router.get("/",…
Dijkie85
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How to update request parameters in FastAPI

I am using FastAPI, I want to define a Middleware in which I can intercept the encrypted parameters passed by the front-end and decrypt them, and replace the original parameters with the decrypted ones, what should I do? I have tried body = await…
gthank
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Python FastAPI doesn't save content from POST file request

I have this simple code snippet that I use for File upload using FastAPI in Python. @app.post("/uploadfile") async def create_upload_file(file: UploadFile = File(...)): contents = await file.read() print(str(contents)[2:-1]) with…
anthino12
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How to logout in FastAPI-login?

I have a basic web site on FastAPI. I would like to implement login/logout (Auth) behavior similar to Flask-login, i.e. allow access to a function/path with decorator like @login_required or FastAPI Dependecy injection. I found fastapi-login module…
uzla
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Cookie based Authentication in FastAPI

I am looking to integrate Cookie based authentication in my FastAPI App. I want the same to work seamlessly with swagger as well. I want to have a route (eg: /login) which sets my browser cookies. All other protected route uses Depends in the…
Irfanuddin
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Write data to a CSV on the fly and download the file using fast api

I am getting corrupted data when I am downloading the file using the api: file_name = 'download' prepared_df = pd.DataFrame.from_dict(data) path_to_excel = os.path.join(dir_to_download, file_name) writer = pd.ExcelWriter(path_to_excel,…
Rohan Kumar
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Why does documentation use lru_cache decorated function to get settings, instead of importing an initialized settings object from the module directly

FastAPI documentation recommends using lru_cache decorated functions to retrieve the config file. That makes sense to avoid I/O getting the env file. config.py from pydantic import BaseSettings class Settings(BaseSettings): app_name: str =…
mowienay
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Request do not reach FastAPI Server

I was working on Flask microservice and I needed to rewrite it with FastAPI but I had a problem that I had not with Flask. The problem is that I send a request which is not reaching the server indefinitely. To unstuck the request for example with…
brilleta
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fastapi connection using Python requests

I have a fast api for a simple ML model. THE post request for API is @app.post('/predict') def predict_species(data: str): data_new = np.array([data]) prob = lr_tfidf.predict_proba(data_new).max() pred = lr_tfidf.predict(data_new) …
Ahmad Anis
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How to use refresh token with Keycloak and Fastapi?

I am using the built-in Oauth2 fastapi module to contact the Keycloak token endpoint and get an access token. In Keycloak I have a client with openid-connect and confidential access type, and client credentials flow enabled (this looked like the…
Mylden
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Increase API timeout in fastapi from docker image

I running FastAPI docker image and getting timeouts. The default timeout is 60 seconds. Any idea what will be the simplest way to increase the timeout?
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