  import string
  from contextlib import suppress
  
  from django.core.exceptions import ImproperlyConfigured, ValidationError
  from django.db import models
  from django.db.models.signals import pre_delete, pre_save
  from django.http.request import split_domain_port
 
</s> remove from contextlib import suppress
 </s> add  </s> remove from contextlib import suppress
 </s> add  </s> remove from contextlib import suppress

 </s> add  </s> remove from contextlib import suppress
 </s> add  </s> remove from contextlib import suppress
 </s> add 
  import string

  
  from django.core.exceptions import ImproperlyConfigured, ValidationError
  from django.db import models
  from django.db.models.signals import pre_delete, pre_save
  from django.http.request import split_domain_port
keep replace keep keep keep keep keep
 Reverted "Fixed #27818 -- Replaced try/except/pass with contextlib.suppress()."

This reverts commit 550cb3a365dee4edfdd1563224d5304de2a57fda
because try/except performs better. 
django/contrib/sites/models.py