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- Development - Contributing 20531
- Development - Contributing Warning The current page still doesn't have a translation for this language. But you can help translating it: Contributing . First, you might want to see the basic ways to help FastAPI and get help . Developing If
...you already cloned the fastapi repository and you want to deep dive in the code, here are some guidelines to set up your environment. Virtual environment Follow t...he instructions to create and activate a virtual environment for the internal code of fastapi . Install requirements using pip After activati...er page translated. That will make it much easier for others to review it. To check the 2-letter code for the language you want to translate, you can use the table List of ISO 639-1 codes . Existing language Let's say you want to translate a page for... - https://man.mtool.work/fastapi/0.115/contributing/
- Deploy FastAPI on Cloud Providers 20053
- Deploy FastAPI on Cloud Providers Warning The current page still doesn't have a translation for this language. But you can help translating it: Contributing . You can use virtually any cloud provider to deploy your FastAPI application. In m
...ost of the cases, the main cloud providers have guides to deploy FastAPI with them. Cloud Providers - Sponsors Some cloud provi...ders ✨ sponsor FastAPI ✨, this ensures the continued and healthy development of FastAPI and its ecosystem . And it shows their true commitment to FastAPI and its community (you), as they not only want...to provide you a good service but also want to make sure you have a good and healthy framework , FastAPI. ? You might want to try their services and follow their guid... - https://man.mtool.work/fastapi/0.115/deployment/cloud/
- Virtual Environments 19661
- Virtual Environments Warning The current page still doesn't have a translation for this language. But you can help translating it: Contributing . When you work in Python projects you probably should use a virtual environment (or a similar m
...echanism) to isolate the packages you install for each project. Info If you already know about virtual environments, how to create them...and use them, you might want to skip this section. ? Tip A virtual environment is different than an environment variable . An environment variable is a...variable in the system that can be used by programs. A virtual environment is a directory with some files in it. Info This page will teach you how to use virtual environments and how they work. If you are ready... - https://man.mtool.work/fastapi/0.115/virtual-environments/
- OpenAPI Webhooks 18080
- OpenAPI Webhooks Warning The current page still doesn't have a translation for this language. But you can help translating it: Contributing . There are cases where you want to tell your API users that your app could call their app (sending
...a request) with some data, normally to notify of some type of event . This means that instead of the normal process of your users sending requests to your API, i...t's your API (or your app) that could send requests to their system (to their API, their app). This is normally called a webhook . Webhooks steps The process normally is that yo...how to register the URLs for webhooks and the code to actually send those requests is up to you. You write it however you want to in your own code . Documenting webhooks with FastAPI and OpenAPI With FastAPI , using OpenAPI, you can define the names... - https://man.mtool.work/fastapi/0.115/advanced/openapi-webhooks/
- Response - Change Status Code 17967
- Response - Change Status Code Warning The current page still doesn't have a translation for this language. But you can help translating it: Contributing . You probably read before that you can set a default Response Status Code . But in som
...e cases you need to return a different status code than the default. Use case For example, imagine that you want to return an HTTP status code...of "OK" 200 by default. But if the data didn't exist, you want to create it, and return an HTTP status code of "CREATED" 201 . But you still want to be able to filter and convert the da...al response object. Python 3.8+ from fastapi import FastAPI , Response , status app = FastAPI () tasks = { "foo" : "Listen to the Bar Fighters" } @app . put ( "/get-or-create-task/ {task_id} " , status_code = 200 ) def get_or_create_task ( task_id... - https://man.mtool.work/fastapi/0.115/advanced/response-change-status-code/
- Bigger Applications - Multiple Files 17542
- Bigger Applications - Multiple Files Warning The current page still doesn't have a translation for this language. But you can help translating it: Contributing . If you are building an application or a web API, it's rarely the case that you
...can put everything in a single file. FastAPI provides a convenience tool to structure your application while keeping all the flexibility. Info If you come from Flask, this would be the equivale...nt of Flask's Blueprints. An example file structure Let's say you have a file structure like this: . ├── app │ ├── __init__.py...ternal.admin APIRouter Let's say the file dedicated to handling just users is the submodule at /app/routers/users.py . You want to have the path operations related to your users separated from the rest of the code, to keep it organized. But it's stil... - https://man.mtool.work/fastapi/0.115/tutorial/bigger-applications/
- Lifespan Events 16883
- Lifespan Events Warning The current page still doesn't have a translation for this language. But you can help translating it: Contributing . You can define logic (code) that should be executed before the application starts up . This means t
...span (the word "lifespan" will be important in a second ?). This can be very useful for setting up resources that you need to use for the whole app, and that are shared among requests, and/or that you need to clean up afterwards. For example, a dat...onnection pool, or loading a shared machine learning model. Use Case Let's start with an example use case and then see how to solve it with this. Let's imagine that you have some machine learning models that you want to use to handle requests. ? Th...'s imagine that loading the model can take quite some time , because it has to read a lot of data from disk . So you don't want to do it for every request. You could load it at the top level of the module/file, but that would also mean that it would... - https://man.mtool.work/fastapi/0.115/advanced/events/
- Generate Clients 16336
- Generate Clients Warning The current page still doesn't have a translation for this language. But you can help translating it: Contributing . As FastAPI is based on the OpenAPI specification, you get automatic compatibility with many tools,
...including the automatic API docs (provided by Swagger UI). One particular advantage that is not necessarily obvious is that you can generate...clients (sometimes called SDKs ) for your API, for many different programming languages . OpenAPI Client Generators There are many tools to generate clients from OpenAPI . A common tool is OpenAPI Generator . If you are building a front...ent of FastAPI and its ecosystem . And it shows their true commitment to FastAPI and its community (you), as they not only want to provide you a good service but also want to make sure you have a good and healthy framework , FastAPI. ? For example, y... - https://man.mtool.work/fastapi/0.115/advanced/generate-clients/
- Custom Request and APIRoute class 16205
- Custom Request and APIRoute class Warning The current page still doesn't have a translation for this language. But you can help translating it: Contributing . In some cases, you may want to override the logic used by the Request and APIRout
...e classes. In particular, this may be a good alternative to logic in a middleware. For example, if you want to read or manipulate the request body before it is processed by your appl...ication. Danger This is an "advanced" feature. If you are just starting with FastAPI you might want to skip this section. Use cases Some use cases include: Converting non-JSON request bodies to JSON (e.g. msgpack ). Decomp...ressing gzip-compressed request bodies. Automatically logging all request bodies. Handling custom request body encodings Let's see how to make use of a custom Request... - https://man.mtool.work/fastapi/0.115/how-to/custom-request-and-route/
- Async Tests 16203
- Async Tests Warning The current page still doesn't have a translation for this language. But you can help translating it: Contributing . You have already seen how to test your FastAPI applications using the provided TestClient . Up to now,
...you have only seen how to write synchronous tests, without using async functions. Being able to use asynchronous functions in your tests could be us...eful, for example, when you're querying your database asynchronously. Imagine you want to test sending requests to your FastAPI application and then verify that your backend successfully wrote the correct data...in the database, while using an async database library. Let's look at how we can make that work. pytest.mark.anyio If we want to call asynchronous functions in our tests, our test functions have to be asynchronous. AnyIO provides a neat plugin for... - https://man.mtool.work/fastapi/0.115/advanced/async-tests/