anshuUnity

from your_app import views
from django.urls import path

urlpatterns = [
    ...
    path('csv/', views.user_csv, name='users_csv'),
]

anshuUnity

import csv

from django.http import HttpResponse
from django.contrib.auth.models import User

def user_csv(request):
    response = HttpResponse(content_type='text/csv')
    response['Content-Disposition'] = 'attachment; filename="users.csv"'

    csv_writer = csv.writer(response)