old_contents: import datetime
  
  from django.utils.timezone import utc
  
  from .models import Ticket
  
  
  class TicketServices():
      def edit_ticket_once(self, **kwargs):
          id_list = kwargs.get('id_list')
          edit_tags = kwargs.get('edit_tags')
          edit_requester = kwargs.get('edit_requester')
          edit_subject = kwargs.get('edit_subject')
          edit_due_at = kwargs.get('edit_due_at')
          edit_assignee = kwargs.get('edit_assignee')
  
          if edit_tags:
              Ticket.objects.filter(
                  pk__in=id_list
              ).update(tags=edit_tags)
          if edit_subject:
              Ticket.objects.filter(
                  pk__in=id_list
              ).update(subject=edit_subject)
          if edit_requester:
              Ticket.objects.filter(
                  pk__in=id_list
              ).update(requester=edit_requester)
          if edit_due_at:
              Ticket.objects.filter(
                  pk__in=id_list
              ).update(
                  due_at=datetime.datetime.strptime(
                      edit_due_at, "%m/%d/%Y"
                  ).replace(tzinfo=utc)
              )
          if edit_assignee:
              Ticket.objects.filter(
                  pk__in=id_list
              ).update(assignee=edit_assignee)
  
new_contents: import datetime
  
  from django.utils.timezone import utc
  
  from .models import Ticket
  
  
  class TicketServices():
      def edit_ticket_once(self, **kwargs):
          id_list = kwargs.get('id_list')
          edit_tags = kwargs.get('edit_tags')
          edit_requester = kwargs.get('edit_requester')
          edit_subject = kwargs.get('edit_subject')
          edit_due_at = kwargs.get('edit_due_at')
          edit_assignee = kwargs.get('edit_assignee')
  
          if edit_tags:
              Ticket.objects.filter(pk__in=id_list).update(tags=edit_tags)
          if edit_subject:
              Ticket.objects.filter(pk__in=id_list).update(subject=edit_subject)
          if edit_requester:
              Ticket.objects.filter(pk__in=id_list).update(
                  requester=edit_requester
              )
          if edit_due_at:
              Ticket.objects.filter(pk__in=id_list).update(
                  due_at=datetime.datetime.strptime(
                      edit_due_at, '%m/%d/%Y'
                  ).replace(tzinfo=utc)
              )
          if edit_assignee:
              Ticket.objects.filter(pk__in=id_list).update(
                  assignee=edit_assignee
              )
  
subject: Adjust code style to reduce lines of code :bear: