Fixed typos in docs/topics/python3.txt

.. _six: http://pythonhosted.org/six/

This document is primarily targeted at authors of pluggable application

This document is primarily targeted at authors of pluggable applications

who want to support both Python 2 and 3. It also describes guidelines that

apply to Django's code.

In Python 3, there's simply :meth:`~object.__str__`, which must return ``str``

(text).

(It is also possible to define :meth:`~object.__bytes__`, but Django application

(It is also possible to define :meth:`~object.__bytes__`, but Django applications

have little use for that method, because they hardly ever deal with ``bytes``.)

Django provides a simple way to define :meth:`~object.__str__` and

=================

The following guidelines are enforced in Django's source code. They're also

recommended for third-party application who follow the same porting strategy.

recommended for third-party applications that follow the same porting strategy.

Syntax requirements

-------------------