  
            first_name = models.CharField(max_length=20)
            last_name = models.CharField(max_length=40)
  
  * If you define a ``__str__`` method (previously ``__unicode__`` before Python 3
    was supported), decorate the model class with
    :func:`~django.utils.encoding.python_2_unicode_compatible`.
  
  * The order of model inner classes and standard methods should be as
    follows (noting that these are not all required):
  
    * All database fields
    * Custom manager attributes
 
</s> remove @python_2_unicode_compatible
 </s> add  </s> remove Choosing between ``__str__()`` and ``__unicode__()``
----------------------------------------------------

.. note::

    If you are on Python 3, you can skip this section because you'll always
    create ``__str__()`` rather than ``__unicode__()``. If you'd like
    compatibility with Python 2, you can decorate your model class with
    :func:`~django.utils.encoding.python_2_unicode_compatible`.

One consequence of using Unicode by default is that you have to take some care
when printing data from the model.

In particular, rather than giving your model a ``__str__()`` method, we
recommended you implement a ``__unicode__()`` method. In the ``__unicode__()``
method, you can quite safely return the values of all your fields without
having to worry about whether they fit into a bytestring or not. (The way
Python works, the result of ``__str__()`` is *always* a bytestring, even if you
accidentally try to return a Unicode object).

You can still create a ``__str__()`` method on your models if you want, of
course, but you shouldn't need to do this unless you have a good reason.
Django's ``Model`` base class automatically provides a ``__str__()``
implementation that calls ``__unicode__()`` and encodes the result into UTF-8.
This means you'll normally only need to implement a ``__unicode__()`` method
and let Django handle the coercion to a bytestring when required.

 </s> add  </s> remove If you'd like compatibility with Python 2, you can decorate your model class
with :func:`~django.utils.encoding.python_2_unicode_compatible` as shown above.

 </s> add  </s> remove @python_2_unicode_compatible
 </s> add  </s> remove @python_2_unicode_compatible
 </s> add 
  
            first_name = models.CharField(max_length=20)
            last_name = models.CharField(max_length=40)
  




  * The order of model inner classes and standard methods should be as
    follows (noting that these are not all required):
  
    * All database fields
    * Custom manager attributes
keep keep keep keep replace replace replace replace keep keep keep keep keep
 Refs #23919 -- Removed python_2_unicode_compatible decorator usage 
docs/internals/contributing/writing-code/coding-style.txt