Why is Django giving Page not found error?

I am Building a Sample REST API using Django-REST-Framework and Apache Cassandra.
Here's my model:

import uuid
from cassandra.cqlengine import columns
from cassandra.cqlengine.models import Model


class User(Model):
read_repair_chance = 0.05
user_id = columns.UUID(primary_key=True, default=uuid.uuid4)
username = columns.Text(required=True)
password = columns.Text(required=True)
email = columns.Text(required=True)

def __str__(self):
return self.username

def get(self,request, format=None):
uname = [user.name for user in User.object.all()]
return Response(uname)


I am able to add new users and get a list of them.

But when I try to issue a DELETE request using POSTMAN,

DELETE

POSTMAN

DELETE http://localhost:8000/users/0f7b0ada-01ab-4907-b9d2-3fa0d27ae1ce


I am getting page not found 404 error.
Can someone identify where am I going wrong.
Here's the contents of the rest of the files:
Views.py

from rest_framework import viewsets
from .models import User
from .serializers import UserSerializer
from rest_framework.response import Response
from rest_framework import status


class UserView(viewsets.ViewSet):
def get_object(self, pk):
try:
return User.objects.get(pk=pk)
except User.DoesNotExist:
raise Http404

def get_user_list(self, request):
queryset = User.objects.all()
serializer = UserSerializer(queryset,many=True)
return Response(serializer.data)

def get(self, request, pk, format=None):
user = self.get_object(pk)
serializer = UserSerializer(user)
return Response(user.data)

def post(self, request):
serializer = UserSerializer(data=request.data)
if serializer.is_valid():
serializer.save()
return Response(serializer.data, status=status.HTTP_201_CREATED)
return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)

def put(self, request, pk, format=None):
user = self.get_object(pk)
serializer = UserSerializer(user, data=request.data)
if serializer.is_valid():
serializer.save()
return Response(serializer.data)
return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)

def delete(self, request, pk, format=None):
user = self.get_object(pk)
user.delete()
return Response(status=status.HTTP_204_NO_CONTENT)


Project URLS:

from django.urls import path, include
urlpatterns = [
path('users/', include('userdatabase.urls')),
#path('',)
]

from django.urls import path, include
from .views import UserView
user_list = UserView.as_view({'get':'get_user_list', 'delete': 'delete'})

urlpatterns = [
path('', user_list, name='user_list'),
path('users/delete/<uuid:pk>', user_list, name='user_list')
]


serializers.py

import uuid
from rest_framework import serializers
from .models import User

class UserSerializer(serializers.Serializer):
user_id = serializers.UUIDField(default=uuid.uuid4())
username = serializers.CharField(required=True)
password = serializers.CharField(required=True)
email = serializers.CharField(required=True)

def create(self, validated_data):
return User.create(**validated_data)

def update(self, instance, validated_data):
instance.username = validated_data.get('email', instance.username)
instance.password = validated_data.get('content', instance.password)
instance.email = validated_data.get('created', instance.email)
return instance


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