[docs] [issue14219] start the Class tutorial in a more gentle manner

Changes by Tshepang Lekhonkhobe tshepang@gmail.com:

---------- versions: +Python 2.6, Python 2.7, Python 3.1, Python 3.2, Python 3.3

_______________________________________ Python tracker report@bugs.python.org http://bugs.python.org/issue14219 _______________________________________