Don’t forget to register your APIRouter with your FastAPI app in Python

When developing a web application with FastAPI in Python, it is crucial to properly register your APIRouter to ensure that your endpoints are accessible and functioning correctly.

Step 1: Create an APIRouter

Before registering your APIRouter, you must first create it. You can define your endpoints and route handlers within the APIRouter to structure your API endpoints.

Step 2: Register the APIRouter with your FastAPI app

To register your APIRouter with your FastAPI app, you need to import your APIRouter at the top of your main FastAPI app file. Then, use the include_router function to add your APIRouter to the FastAPI app.

Example:


from fastapi import FastAPI
from fastapi.routing import APIRouter

app = FastAPI()

router = APIRouter()

@router.get("/")
async def read_root():
return {"message": "Hello World"}

app.include_router(router, tags=["Endpoints"])


Step 3: Test your API endpoints

Once you have registered your APIRouter with your FastAPI app, you can test your API endpoints by sending requests to the defined routes. Make sure that your endpoints are returning the expected responses and handling requests correctly.

Conclusion

Registering your APIRouter with your FastAPI app is an important step in building a robust and reliable web application in Python. By following the steps outlined above, you can ensure that your API endpoints are properly structured and accessible for your users.