Shared dependencies across routers in FastAPI - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the FastAPI class.

FastAPI

from fastapi import [1]
app = [1]()

Drag options to blanks, or click blank then click option'

AAPIRouter

BDepends

CFastAPI

DRequest

Attempts:

3 left

💡 Hint

Common Mistakes

Importing Depends instead of FastAPI

Using APIRouter to create the main app

The FastAPI class is imported from fastapi to create the app instance.

2fill in blank

medium

Complete the code to define a dependency function that returns a string.

FastAPI

def common_dependency():
    return [1]

Drag options to blanks, or click blank then click option'

A'shared value'

BTrue

CNone

D42

Attempts:

3 left

💡 Hint

Common Mistakes

Returning a number instead of a string

Returning None which is not useful here

The dependency returns a string 'shared value' to be used in routes.

3fill in blank

hard

Fix the error in the router dependency declaration.

FastAPI

from fastapi import APIRouter, Depends

router = APIRouter(
    dependencies=[Depends([1])]
)

Drag options to blanks, or click blank then click option'

Aapp

Bcommon_dependency

CFastAPI

DRequest

Attempts:

3 left

💡 Hint

Common Mistakes

Passing the app instance instead of the dependency function

Passing a class like FastAPI instead of a function

The dependency function common_dependency must be passed to Depends in the router.

4fill in blank

hard

Fill both blanks to create a route that uses the shared dependency and returns its value.

FastAPI

@router.get("/shared")
async def read_shared(value: str = [1]([2])):
    return {"value": value}

Drag options to blanks, or click blank then click option'

ADepends

Bcommon_dependency

CRequest

DFastAPI

Attempts:

3 left

💡 Hint

Common Mistakes

Using Request or FastAPI instead of Depends

Not passing the dependency function to Depends

The route parameter uses Depends with the common_dependency function to get the shared value.

5fill in blank

hard

Fill all three blanks to include the router in the app with a prefix and shared dependencies.

FastAPI

app.include_router(
    router,
    prefix=[1],
    dependencies=[[2]([3])]
)

Drag options to blanks, or click blank then click option'

A"/items"

BDepends

Ccommon_dependency

D"/users"

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong prefix string

Not wrapping the dependency function with Depends

The router is included with prefix '/users' and the shared dependency declared with Depends(common_dependency).