Why project structure matters at scale in FastAPI - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import FastAPI and create an app instance.

FastAPI

from fastapi import [1]

app = [1]()

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AFastAPI

BRequest

CResponse

DDepends

Attempts:

3 left

💡 Hint

Common Mistakes

Importing other classes like Request instead of FastAPI

Forgetting to create an instance of FastAPI

You need to import FastAPI and create an instance of it to start your app.

2fill in blank

medium

Complete the code to define a simple GET route that returns a greeting.

FastAPI

@app.[1]("/")
async def read_root():
    return {"message": "Hello World"}

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Aget

Bpost

Cput

Ddelete

Attempts:

3 left

💡 Hint

Common Mistakes

Using POST instead of GET for a read route

Misspelling the decorator name

The @app.get decorator defines a GET HTTP method route.

3fill in blank

hard

Fix the error in the code to correctly include a router from another module.

FastAPI

from fastapi import FastAPI
from routers import users

app = FastAPI()
app.[1](users.router)

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Aregister

Badd_route

Cmount

Dinclude_router

Attempts:

3 left

💡 Hint

Common Mistakes

Using add_route which is not a FastAPI method

Confusing mount with include_router

Use include_router to add routers from other modules in FastAPI.

4fill in blank

hard

Fill both blanks to create a modular project structure with routers and models.

FastAPI

from fastapi import FastAPI
from [1] import router as user_router
from [2] import User

app = FastAPI()
app.include_router(user_router)

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Arouters.users

Bmodels.user

Cservices.auth

Dschemas.user

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up routers and models imports

Using wrong folder names

Routers are usually in a routers folder, models in a models folder.

5fill in blank

hard

Fill all three blanks to define a Pydantic model and use it in a POST route.

FastAPI

from fastapi import FastAPI
from pydantic import BaseModel

class [1](BaseModel):
    name: str
    age: int

app = FastAPI()

@app.post("/users")
async def create_user(user: [2]):
    return {"user_name": user.[3]

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AUser

Cname

DPerson

Attempts:

3 left

💡 Hint

Common Mistakes

Using different names for model and parameter

Returning wrong attribute from user

The Pydantic model is named User. The POST route accepts a User object and returns the name attribute.