      def __str__(self):
          return "%s is a member of %s" % (self.person.name, self.group.name)
  
  
  @python_2_unicode_compatible
  class CustomMembership(models.Model):
      person = models.ForeignKey(
          Person,
          models.CASCADE,
          db_column="custom_person_column",
 
</s> remove @python_2_unicode_compatible
 </s> add  </s> remove @python_2_unicode_compatible
 </s> add  </s> remove @python_2_unicode_compatible
 </s> add  </s> remove @python_2_unicode_compatible
 </s> add  </s> remove @python_2_unicode_compatible
 </s> add 
      def __str__(self):
          return "%s is a member of %s" % (self.person.name, self.group.name)
  
  

  class CustomMembership(models.Model):
      person = models.ForeignKey(
          Person,
          models.CASCADE,
          db_column="custom_person_column",
keep keep keep keep replace keep keep keep keep keep
 Refs #23919 -- Removed python_2_unicode_compatible decorator usage 
tests/m2m_through/models.py