      raise KeyError('Class %s not found in lookup.', cls.__name__)
  
  
  class ModelSerializer(Serializer):
      field_mapping = {
          models.AutoField: IntegerField,
          models.BigIntegerField: IntegerField,
          models.BooleanField: BooleanField,
          models.CharField: CharField,
 
</s> remove         if model_field.verbose_name is not None:
            kwargs['label'] = model_field.verbose_name
 </s> add         if model_field.verbose_name and needs_label(model_field, field_name):
            kwargs['label'] = capfirst(model_field.verbose_name) </s> remove     #     print repr(TestSerializer()) </s> add  </s> remove     def get_related_field(self, model_field, related_model, to_many, has_through_model):
 </s> add     def get_related_field(self, field_name, model_field, related_model, to_many, has_through_model): </s> remove         class NestedModelSerializer(ModelSerializer):  # Not right!
 </s> add         class NestedModelSerializer(ModelSerializer): </s> remove         name = CharField(label='name', max_length=100)
 </s> add         name = CharField(max_length=100)
def needs_label(model_field, field_name):
    """
    Returns `True` if the label based on the model's verbose name
    is not equal to the default label it would have based on it's field name.
    """
    return capfirst(model_field.verbose_name) != field_name_to_label(field_name)


      raise KeyError('Class %s not found in lookup.', cls.__name__)
  
  
def needs_label(model_field, field_name):
    """
    Returns `True` if the label based on the model's verbose name
    is not equal to the default label it would have based on it's field name.
    """
    return capfirst(model_field.verbose_name) != field_name_to_label(field_name)


  class ModelSerializer(Serializer):
      field_mapping = {
          models.AutoField: IntegerField,
          models.BigIntegerField: IntegerField,
          models.BooleanField: BooleanField,
          models.CharField: CharField,
keep keep add keep keep keep keep keep keep
 Drop label from serializer fields when not needed 
rest_framework/serializers.py