如何在django中返回文件

from django.http import HttpResponse
from django.conf import settings
import os

def download_file(request):
    file_path = os.path.join(settings.STATIC_ROOT, 'path_to_file/file_name.ext')  # 文件的完整路径
    with open(file_path, 'rb') as file:
        response = HttpResponse(file.read(), content_type='application/octet-stream')
        response['Content-Disposition'] = 'attachment; filename=' + os.path.basename(file_path)
        return response

from django.urls import path
from . import views

urlpatterns = [
    path('download/', views.download_file, name='download'),
]