FastAPI: Multiple file uploads example

FastAPI allows you to upload multiple files in at the same time.

 

Example 1: Using List[bytes]

@app.post("/files/")
async def create_file(files: List[bytes] = File(...)):
    contentReceived = []

    for file in files:
        contentReceived.append(str(file))

    return {"contentReceived": contentReceived}

 

Example 2: Using List[UploadFile]

@app.post("/uploadfiles/")
async def create_upload_file(files:List[UploadFile] = File(...)):
    fileNames = []

    for file in files:
        fileNames.append(file.filename)

    return {"fileNames": fileNames}

Find the below working application.

 

multipleFileuploads.py

from fastapi import FastAPI, File, UploadFile
from typing import List

app = FastAPI()

@app.post("/files/")
async def create_file(files: List[bytes] = File(...)):
    contentReceived = []

    for file in files:
        contentReceived.append(str(file))

    return {"contentReceived": contentReceived}

@app.post("/uploadfiles/")
async def create_upload_file(files:List[UploadFile] = File(...)):
    fileNames = []

    for file in files:
        fileNames.append(file.filename)

    return {"fileNames": fileNames}

Open terminal and execute the command ‘uvicorn multipleFileuploads:app --reload’.

$uvicorn multipleFileuploads:app --reload
INFO:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
INFO:     Started reloader process [28879] using statreload
INFO:     Started server process [28881]
INFO:     Waiting for application startup.
INFO:     Application startup complete.

 Open the url ‘http://localhost:8000/docs’ in browser and experiment with swagger documentation.

  

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