* Read the summary of changes in Python 3: http://docs.python.org/release/3.0.1/whatsnew/3.0.html http://docs.python.org/release/3.0.1/whatsnew/3.0.html * See

* Read the summary of changes in Python 3: http://docs.python.org/release/3.0.1/whatsnew/3.0.html http://docs.python.org/release/3.0.1/whatsnew/3.0.html * See Guido Rossum's Transitional Development notes here: http://www.artima.com/weblogs/viewpost.jsp?thread=208549 http://www.artima.com/weblogs/viewpost.jsp?thread=208549 * Read Mark Pilgrim's excellent chapter from Dive into Python 3: http://diveintopython3.org/porting-code-to-python-3-with-2to3.html http://diveintopython3.org/porting-code-to-python-3-with-2to... * Use Python 2.7 and turn on deprecation warnings. EDIT: Found this great guide to forward compatibility: * http://www.slideshare.net/regebro/python-3-compatibility-pycon-2009 http://www.slideshare.net/regebro/python-3-compatibility-pyc...