token.view.py

class TokenViewSet(viewsets.GenericViewSet):

    def retrieve(self, request, pk=None):
        if request.user.is_authenticated():
            token, created = Token.objects.get_or_create(user=request.user)
            return Response({ 'token': token.key })
        else:
            return Response({
                'status': 'Access Denied!',
                'message': 'This account is not active!'
            }, status=status.HTTP_401_UNAUTHORIZED)