File responses in FastAPI - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the correct class for sending a file response in FastAPI.

FastAPI

from fastapi import FastAPI
from fastapi.responses import [1]

app = FastAPI()

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

AHTMLResponse

BJSONResponse

CRedirectResponse

DFileResponse

Attempts:

3 left

💡 Hint

Common Mistakes

Importing JSONResponse or HTMLResponse instead of FileResponse.

Forgetting to import any response class.

The FileResponse class is used in FastAPI to send files as responses.

2fill in blank

medium

Complete the code to return a file named 'example.txt' from the '/download' route.

FastAPI

from fastapi import FastAPI
from fastapi.responses import FileResponse

app = FastAPI()

@app.get('/download')
async def download_file():
    return [1]('example.txt')

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

AJSONResponse

BHTMLResponse

CFileResponse

DRedirectResponse

Attempts:

3 left

💡 Hint

Common Mistakes

Returning JSONResponse or HTMLResponse instead of FileResponse.

Forgetting to specify the filename.

Use FileResponse to send the file 'example.txt' as a response.

3fill in blank

hard

Fix the error in the code to correctly send a file with a custom filename 'report.pdf' in the response.

FastAPI

from fastapi import FastAPI
from fastapi.responses import FileResponse

app = FastAPI()

@app.get('/report')
async def get_report():
    return FileResponse('files/report.pdf', [1]='report.pdf')

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

Afile

Bfilename

Cname

Dfile_name

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'file_name' or 'name' instead of 'filename'.

Passing the filename as a positional argument.

The correct parameter to set the download filename in FileResponse is filename.

4fill in blank

hard

Fill both blanks to send a file with media type 'application/pdf' and enable HTTP caching.

FastAPI

from fastapi import FastAPI
from fastapi.responses import FileResponse

app = FastAPI()

@app.get('/pdf')
async def get_pdf():
    return FileResponse('docs/sample.pdf', media_type=[1], [2]='max-age=3600')

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

A'application/pdf'

Bbackground

Ccache_control

Duse_cache

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong media type strings.

Using incorrect parameter names for caching.

The media_type should be 'application/pdf' for PDF files, and cache_control enables HTTP caching.

5fill in blank

hard

Fill all three blanks to send a file with custom filename, media type, and set background task to delete the file after sending.

FastAPI

from fastapi import FastAPI
from fastapi.responses import FileResponse
from fastapi.background import BackgroundTask
import os

app = FastAPI()

def remove_file(path: str):
    os.remove(path)

@app.get('/tempfile')
async def send_temp_file():
    path = 'temp/data.txt'
    return FileResponse(path, filename=[1], media_type=[2], background=BackgroundTask([3], path))

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

A'data.txt'

B'text/plain'

Cremove_file(path)

Dremove_file

Attempts:

3 left

💡 Hint

Common Mistakes

Calling remove_file(path) instead of passing remove_file.

Using wrong media type strings.

Not setting the filename parameter.

Set filename to 'data.txt', media_type to 'text/plain', and pass the function remove_file (without calling it) to BackgroundTask to delete the file after sending.