      def validate(self, attrs):
          return attrs
  
      def __repr__(self):
          return unicode_to_repr(representation.serializer_repr(self, indent=1))
  
      # The following are used for accessing `BoundField` instances on the
      # serializer, for the purposes of presenting a form-like API onto the
      # field values and field errors.
  
 
</s> remove         return unicode_to_repr(representation.list_repr(self, indent=1))
 </s> add         return representation.list_repr(self, indent=1) </s> remove         return unicode_to_repr(representation.field_repr(self))
 </s> add         return representation.field_repr(self) </s> remove def unicode_repr(instance):
    # Get the repr of an instance, but ensure it is a unicode string
    # on both python 3 (already the case) and 2 (not the case).
    if six.PY2:
        return repr(instance).decode('utf-8')
    return repr(instance)


def unicode_to_repr(value):
    # Coerce a unicode string to the correct repr return type, depending on
    # the Python version. We wrap all our `__repr__` implementations with
    # this and then use unicode throughout internally.
    if six.PY2:
        return value.encode('utf-8')
    return value


 </s> add  </s> remove class BoundField(object):
 </s> add class BoundField: </s> remove         if style.get('input_type') == 'datetime-local' and isinstance(field.value, six.text_type):
 </s> add         if style.get('input_type') == 'datetime-local' and isinstance(field.value, str):
        return representation.serializer_repr(self, indent=1)
      def validate(self, attrs):
          return attrs
  
      def __repr__(self):
        return representation.serializer_repr(self, indent=1)
  
      # The following are used for accessing `BoundField` instances on the
      # serializer, for the purposes of presenting a form-like API onto the
      # field values and field errors.
  
keep keep keep keep replace keep keep keep keep keep
 Dropped Python 2 compatibility. (#6615)

Thanks to Jon Dufresne (@jdufresne) for review.

Co-authored-by: Asif Saif Uddin <auvipy@gmail.com>
Co-authored-by: Rizwan Mansuri <Rizwan@webbyfox.com> 
rest_framework/serializers.py