  from rest_framework.fields import (
      BuiltinSignatureError, DjangoImageField, is_simple_callable
  )
  
  # Tests for helper functions.
  # ---------------------------
  
  
  class TestIsSimpleCallable:
  
 
</s> remove from django.utils.timezone import activate, deactivate, override, utc
 </s> add from django.utils.timezone import activate, deactivate, override </s> remove                 array_field = ListField(allow_empty=False, child=CharField(label='Array field', validators=[<django.core.validators.MaxLengthValidator object>]))
                array_field_with_blank = ListField(child=CharField(label='Array field with blank', validators=[<django.core.validators.MaxLengthValidator object>]), required=False)
        """)
 </s> add                 array_field = ListField(allow_empty=False, child=CharField(label='Array field'%s))
                array_field_with_blank = ListField(child=CharField(label='Array field with blank'%s), required=False)
        """ % (validators, validators)) </s> remove from django.utils.timezone import utc
 </s> add 
utc = datetime.timezone.utc

  from rest_framework.fields import (
      BuiltinSignatureError, DjangoImageField, is_simple_callable
  )
  
utc = datetime.timezone.utc

  # Tests for helper functions.
  # ---------------------------
  
  
  class TestIsSimpleCallable:
  
keep keep keep add keep keep keep keep keep keep
 Confirmed support for Django 4.1. (#8498) 
tests/test_fields.py