How can Pillow and Django be used to download an image?

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1. Import the necessary modules:

from django.shortcuts import HttpResponse
from PIL import Image
from io import BytesIO
import requests

1. Define a view function that reads the image data from a URL and returns it as an HTTP response:

def download_image(request):
    response = requests.get('https://example.com/image.jpg')
    image = Image.open(BytesIO(response.content))
    response = HttpResponse(content_type='image/jpeg')
    image.save(response, 'JPEG')
    response['Content-Disposition'] = 'attachment; filename="image.jpg"'
    return response

1. In your Django application's URL configuration, specify a URL pattern that maps to the download_image view function:

from django.urls import path
from . import views

urlpatterns = [
    path('download-image/', views.download_image, name='download_image'),
]

1. In your HTML template, create a link or button that points to the download-image URL:

<a href="{% url 'download_image' %}">Download Image</a>

When the user clicks the link, the download_image function is executed, fetching the image from the specified URL and returning it as a downloadable file named "image.jpg".